When I was an intern at Apple in 2002, Steve Jobs gave a talk to our cohort. Someone asked if he had any advice and he replied “The things that are important to you now, will not be the things that are important to you later. Sorry, I know that vague but I don’t know how else to say it.” Now that I’m a father (and an actual adult), I think I understand what he means. Don’t feel ashamed because your priorities shift and you lose “ambition”. It could come back or it could be gone forever, whatever the case just try to enjoy what you have at that point.