That's difficult for me. I feel like I lack self motivation, and sometimes I have an irrational fear of getting things done. I just keep expanding or perfecting something that already works, or find random projects to work on instead of doing actual work. Meditation has helped me in the past, but recently I've been procrastinating even that! I guess my one "trick" would be to have a HARD due date. Like a mean boss wants to see this done by next week or they'll yell at me.