Personal life tracker : data structure and essential functions

This might be silly… but I want to get better at Excel and I figured the best way to do that is to "gamify" my life.

I’m planning to build one massive workbook to track everything:

-Personal Finances: Budgeting vs. actual spend.

-Media Tracker: Books read, movies watched, and ratings.

-Health/Habits: Gym days, water intake, or sleep.

Has anyone else done this? I’d love to hear your tips on structure. Specifically:

-Do you keep everything in one giant file or separate ones?

- What are some "must-have" functions for a dashboard like this?

- Any screenshots or templates you’re proud of and willing to share?

I’m not new to excel, I use it for work and school already, but trying to get better