TLDR: You can write a letter or note to your future self, I've found it good way to track your mindset in the past: https://www.futureme.org/

I just got a letter from myself three years ago, it reeks of blue-pilled nonsense of finding love and getting married.

Anyways, I'm about to draft a letter that'll be mailed to me a year later, to focus on improving my skills, staying Monk mode, staying healthy.

Check it out, it's dope.