Lifelong struggle my friend. But you are young so start good habits now.

//Body

Find things you like to do and do it. Every day. Mix it up. Have fun. Running, lifting, rec or social adult sports leagues, if you are into that thing. If you are having fun you will keep up with it.

// Mind

Read and then read some more. Again, do what you enjoy doing. Don’t feel like you have to do something or that if you bounce off something it hadn’t been worthwhile. Just designate X amount of time per day for yourself. Doesn’t have to be a lot.

If you work full time and then do side projects you will inevitably burn out. Hell, if you just work full time you will inevitably burn out. It happens to everyone. Burn out is a signal to mix things up.