Depends.what do you enjoy? What is your passion?who or what motivates, concerns, scares you? Spend time with that - see how it functions - can it be improved -

Depends.what do you enjoy? What is your passion?who or what motivates, concerns, scares you? Spend time with that - see how it functions - can it be improved - does code play a part in that improvement - study - contribute to that via business understanding and process improvement using code. Get feedback, confirm growth, and repeat.