Time management (and procrastination) is my downfall. Can get a lot done in a short amount of time, but if I had just dedicated myself to, and scheduled out, a couple solid hours of work every day/week for a project then I would've been a lot further ahead in the end. Also would've created a better end product than I did in a 1-2 day cram session.
I try to fix it every so often and get organized but I'm procrastinating right now by reading your post and writing this comment... Gonna get back to work now.. promise.