Wow, this really speaks to me. I have to say that I've always been in a similar boat as you. Tons of ideas, tons of unfinished projects, tons of dreams of future success but no follow-through.
I have a blog that I only post to 2-4 times a month, a 10 page screenplay I've been talking about for the last 5 years, about a dozen unfinished business plans, and several notebooks filled with a gazillion ideas. All of these have one thing in common, a lack of focus.
I think if I would just pick one of these things to push through the pain period, I could achieve great success. Perhaps it's finally time to buckle down.
Great post!