When I take on new hobbies, I have to resist making an app for them.
Sure, making apps for your hobbies can be a great way to come up with something that solves a real problem, but the issue is that it takes away time spent simply doing said hobby.
I seek out hobbies to diversify my life, not to make money or do programming 24/7. Early in my career that was great, but over time I realize that there’s more to life than software development.