I spent 90 days learning (and implementing) how to get ideas for my next product by calling business owners in my target market and asking what they need to help their business. I now have owners waiting with money-in-hand for me to solve their problems. I'm spending the next 90 days pre-selling and getting the actual product wireframed for demos, then built, then scaling marketing while I sell sell sell...

TL;DR - pick something you want to do and immerse yourself in this. Every day take action. Learn only what you need to advance yourself forward right now.