If you want to totally screw up your life, here's my advice: cultivate some bad habits. That's how most people do it. Very few people screw up their lives by drinking once, but a lot of people screw it up by developing a drinking problem. I've never heard a story of someone who went to Vegas for the first time and lost his entire fortune, but I've heard plenty of stories of people with gambling addictions who have blackjacked their way to bankruptcy. Even breakups are far more likely to be caused by habitual bad behaviour than by a single action (even in the case of cheating, a lot of couples stay together).
This is because a single action doesn't have all that much leverage on your life. But habits, on the other hand, define us as people-- literally. What we do regularly becomes a label. Bob's an alcoholic. Tom is a cheater. Raymond is a gambler. Habits change ephemeral verbs (Tom cheated) to nouns. Once you're defined by your habits, it takes a lot to change that. If Bob doesn't drink for a night, he isn't magically changed into tee-totaler. You are your habits.
And that's why habits are my religion. I write about them all the time, from every single angle, and that's mostly a result of being fixated on habits in my own life. If you can change your habits, you can change who you are. So I pay very little attention to rare occurrences and work on my habits constantly.
A quick little post today on my routine that I go through when I'm stuck. Let's say that I'm programming and I'm hitting a wall, maybe I'm getting frustrated that I can't figure something out, and I feel like I'm spinning my wheels. Despite being a supreme genius of the universe, this happens to me all the time. Now I have a little routine that I go through systematically, and eighty percent of the time or so it gets me moving again.
The first thing I do is I clean up my desk. I hate to admit that I'm influenced by such trivial things as desk clutter, but a nice empty clean desk has a real calming effect on the mind. Sometimes I even wipe it down with soap and water so that it's really clean. This sounds a little bit crazy, but I've noticed a consistent improvement in motivation when I do it. I also clean anything in front of me. In the RV, that's the two front seats and whatever's on the kitchen counter beside me.