Advice for a neurotic

I just ordered a planner. I threw it away two weeks later, and now I ordered a clever fox pro. I'm excited about it, but at the back of my head I know this joy will fade.

I've read Covey, Getting Things Done, Cal Newport, etc. I even read Oliver Burkeman's anti to-do list book.

But nothing seems to click. And things must get done. I tend to overthink everything (ex:is this priority an actual priority?), suffer from analysis paralysis, and then waste the day browsing social media or asking life advice from random people on reddit.

Speaking of which...any advice would be greatly appreciated!!!