I do a similar thing where I keep a list of things I'd like to do in a list in a markdown file. I put subtasks on them, check those off, and eventually, when the product is done, it gets checked as done. This gives a great sense of accomplishment.

Choosing what to do is a challenge for me, so I created a task chooser for when you have trouble deciding what to do next: https://github.com/RobKohr/weighted-task-chooser

And you can assign weights to the different things. I usually run it a couple times until it tells me something I feel like doing.