It's one thing to say "create something challenging and interesting". But just that by itself won't be enough - it's gotta be something you're really passionate

It's one thing to say "create something challenging and interesting". But just that by itself won't be enough - it's gotta be something you're really passionate about, otherwise "interesting" won't be enough to carry you through that 9th month of staying up till 1 am working on it after you get home from work and the kids have gone to sleep. Your life is like a house - you can't just pick up the whole thing and move it without destroying it. You have to tear it down and rebuild it carefully, piece by piece. So my vague, generic advice is as follows: figure out what you're passionate about. If you had 10 million dollars and didn't have to work, what would you spend your time on? If you could choose a life out of all possible lives, what would it look like? Once you've figured that out, take small steps everyday to move yourself there. Figure out what new responsibilities you can take on, and which ones you have that you can drop. Look for a new job. Go back to school. Start a side-business. Write a novel. It sounds like you have all the tools available to do whatever you want with your life, provided you're willing to put in the nights and weekends to make it happen while still taking care of the responsibilities you already have. We only get one life - there's no excuse for not making it as fantastic as possible. Good luck.