I had a similar experiment with sardines, and I found I'm a fan of King Oscar brand.
Also, in my quest for sustained motivation, I read a book I'd recommend. I'm pasting my review below. It's long.
"Grant me chastity and continence, but not yet." - Young St. AugustineI recently read Willpower: Rediscovering the Greatest Human Strength by Roy Baumeister. This is my book report, and I think you should check it out. Why did I read this book? I realize at thirty-four that I have not succeeding in reaching personal goals of which I know I'm capable. While I have no complaints about my quality of life, I want more satisfaction in my accomplishments. The cause of my shortcomings has become clear. After searching several related book sites, the reviews pointed me here. Is this another preachy self-help book? No. It is remarkably story and data driven; it's a series of entertaining anecdotes tied into historical and current scientific studies on human and animal self-control. Baumeister balances findings from hundreds of research studies with biographical stories and direct interviews with the likes of David Blaine (Magician and endurance performer), Henry Morton Stanley ("Livingstone, I presume?"), David Allen (Getting Things Done), Amanda (Fucking) Palmer, and Aaron Patzer (mint.com). In my summary below, I'm skipping the science and personal accounts and picking only my favorite bits of directly practical information. These tips are the results of repeatable behavioral studies, so they should be applicable and helpful to most people with few exceptions. What is willpower? Psychological perspectives on this have shifted historically, but real life studies show that Freud was wrong. Willpower is a single and limited reserve, a bank of self-control, and it is depleted through all forms of stress and then restored through time, rest, and glucose. The capacity of the reserve can be stretched through self-discipline, and the refilling sped by nutrition and mental peace. How does willpower become used up? We use willpower when we force ourselves to get up when we want to sleep, by commuting in traffic, putting up with coworkers we don't like, not eating everything we want to, trying to be nice during conflict, or exercising when we'd rather lie down. Even making decisions such as choosing which phone to buy depletes willpower. Retail stores are designed with this in mind. We become compulsive after a session of making brand and price choices. How do you build and conserve willpower? Read on. • Pick your battles. Limit your time doing chores that feel like drudgery. You'll put off starting chores if the time to completion seems indefinite, and you'll most likely exhaust your willpower reserves and derail your productivity by trying to power through a long task in one sitting. Quitting from mental exhaustion leaves you with a negative feeling about your progress. Consciously decide to stop before overexertion and pick up the task later just as you would with any other healthy exercise. • Instead of creating a long "to-do" list; make a "to-don't" list. Know what drags you down most, and plan to avoid those chores at times which you regularly have poor self-control. Instead of dissecting your task list and setting a granular level of prioritization, pick the top three items and focus only on them. Put the rest out of your mind. Instead of listing large, complex goals like "Learn Objective C", list only the next practical step towards the goal such as "Log into Lynda.com and click the 'programming' category." Having simple, non-vague steps in mind reduces the stress of planning that often intimidates us to the point of procrastination. http://en.wikipedia.org/wiki/Suspense#Zeigarnik_effect• Procrastination isn't necessarily related to perfectionism as is often assumed. Research shows a much stronger connection to impulsiveness. Procrastinators tend to put off a difficult chore that may offer a long-term reward in favor an easier action and an immediate reward. I've come to think that I work best under pressure, such as waiting until the night before a paper is due, but this is a common self-observation among procrastinators. Again, studies show that work done last-minute is of lower quality than that of people who distribute work over time. • When estimating the time and effort needed to complete a task, realize that people generally err positively when judging their own potential. Our personal best and worst case scenarios tend to have an optimistic bias and disregard our own historical behavioral tendencies. "I can do this in like ... two hours. Sure." We tend to judge other's potential less favorably. Get an outside perspective to overcome this planning fallacy. • Successful people don't use their reserves of willpower to rescue themselves in emergencies; rather, they use it to develop safe strategies and routines. They use it to create good habits. These people arrange their lives so that they avoid problem situations. They prepare to play offense so they don't need to react defensively. Set up your life accordingly. Don't expect that you'll magically have more time in the future. Don't be over-confident with expectations of your future willpower. • Sleep deprivation has a nasty effect on willpower. • To break a habit, change your daily routine. Even if the habit is not directly related to the routine, facing the day with a fresh and conscious approach derails your behavioral pattern. You can also use purposeful procrastination to keep yourself from a negative habit without depleting your self-control. Instead of telling yourself, "No, I won't do this thing I'm itching to do", say that you'll do it a little later. This strategy has proven to be successful because it causes less mental stress than simply asserting self-denial. • Studies show that people exhibit better self-control in an orderly environment. Clutter and filth has a negative effect. Simple but frequent tidying can help break a cycle of poor self-control. If you just can't make yourself clean up, go somewhere that's already clean and uncluttered when you need a boost to get your work done. • If you find yourself avoiding your current priority task by choosing other, lower priority tasks, it may help to set a limitation of "this or nothing". Tell yourself that you don't have to perform the priority task, but you can do nothing else productive during the time specified. Rather than jumping from task to task because your lack of focus allows you to quickly rationalize new priorities, choose to only be lazy - or - perform the designated task. Remove other less important tasks as options that can excuse you from the primary task. • Sabotage your weaknesses. Recognize them in spending, eating, web-surfing, drinking, shopping, etc, and create a strategy during your moments of personal strength to save yourself during weakness. Put away the credit card and take only a measured amount of cash when going out. Buy health food in bulk and junk-food in single-serving packages. Use a self-restricting surfing access timer. Decide to drink only on certain days or only X days/week. You may override these limitations from time to time, but they can help you to create positive habits that become routine with practice. • Track yourself and make the information public to friends. Get in the habit of recording metrics of your activities. Record daily weight, spending, time, etc and let friends review the data on a consistent schedule. Self-accountability is much less effective a motivator than accountability to your roommates, your church-group, Twitter or your Facebook wall. Knowing that your activity will be monitored not only gives momentary strength, it will later give you an unambiguous view of your past and allow for honest future planning. • I like bullet points. • When planning steps to reach your goals, include frequent, small rewards. Even a seemingly paltry pat on the back gives the brain the measure of validation needed to repeat the behavior and form a positive pattern. It has taken me a long time to realize that I need practical help building discipline. I've always had a reluctance to using mental tricks or changes to my environment designed to improve my concentration. I idealized a self who would be able to overcome his limitations purely and by sheer will. I wanted to reach this perfectly controlled self the "right" way instead of finding cheap loopholes to productivity. Fortunately, I've come to understand that I'm not that special; I'm like most people in this regard, and these studies of human behavior are applicable to me. Is this working? It's only been a few weeks since finishing the book, and my story can only be anecdotal, but yes. I started running every other day. I'm cooking more often and eating my greens. I'm spending more time reading, and I finished this damn report!