Thank you for your honesty. I think you are on the right track by knowing yourself :)

I overthink to the point of procrastination.

Don't stress, you aren't the only person out there doing so haha. Luckily every challenge can be beaten :)

I used to be the biggest over-thinker out there. Always had thoughts going through my head. I almost school because of that.

The main lesson I learnt was this acronym: K.I.S.S. - Keep It Stupid Simple.

Don't think, just do. As sad as it sounds, life does not consider whether you have a lot to think about or not.. The only thing it wants, is what it asks for. And thinking ain't it :)

Think for 10 seconds, then apply for 2 hours. Rinse and repeat. Let's see how much different your result will be :)