It doesn't, it's not a silver bullet but it can help a lot. And my answer was based on my experience (with some variables similar to OP such as working alone on multiple web projects (unfinished), INTP/introvert etc).

BTW, based on the fact that your account is ~few hours old, I think you might be the one trolling[1] (or meta-trolling, more accurately) here :-)

[1] http://en.wikipedia.org/wiki/Troll_(Internet)

OP suffers from an inability to focus on a task over long periods of time.

This is exactly the type of problem meditation adresses fairly well.

You might be interested in this Google "Tech Talk" on Mindfulness Meditation by Jon Kobat-Zinn: http://www.youtube.com/watch?v=3nwwKbM_vJc