What are you thinking about when you take a walk all by yourself? Or when you are in the shower. Where is your mind wandering when you are in bed but cannot sleep?
There is a high probability the idea that just keeps popping in your mind is what you should be working on, in order to have a happy life.
That is when work will not feel like work and you’ll be thankful to be able to spend your time putting so much passion in what you truly love.