Are you able to focus on only one thing and for more than 5 years? Almost nothing extraordinary can happen before 5 years. Even if you sell before.
Example: I am 99% sure I can make millions of dollars if I go on my yard and start making a hole in the floor. Although, here are the constraints: - working 18 hours a day. - every day and 7 days a week. No vacation.
Are you able to accept the constraints?
This come back to this: passion never fails.
I wish you the best luck on your next thing.