There is the potential that you have ADHD, because what you're describing sounds similar to my situation. I eventually ended up on stimulant medication to help, but there's non-stimulant medication available (if you're opposed to eating amphetamines for breakfast), as well as counselling and other treatment options that don't involve medication.
Even if you don't want to seek professional treatment, you could look up articles on solving problems and achieving goals written specifically for people with ADHD and see if those help.
Even if you don't want to seek professional treatment, you could look up articles on solving problems and achieving goals written specifically for people with ADHD and see if those help.