Love this discussion. Though yeah, @GusC pretty much said everything I was going to. Taking responsibility is the key to everything, but it doesn't mean that you give up fundamental aspects of who you are or what you enjoy- you just operate more wisely (ideally).
@storytimebiondi I know what you mean about feeling at odds. A few years ago I got rid of all my geeky things and habits because I felt it was time to be a real adult. (I was probably 24 at the time.) And it was fine, but after some years I was reintroduced to some things that sparked my dormant youthfulness and I fell in love all over again. I don't let my passions run my life, but I have chosen to accept certain things again because they bring me joy. Some of my social circles don't get it, so we talk about other things and that's fine. We're creators, we're expected to be a little offbeat.
Honestly, the most responsible, successful professionals I admire the most are people who never gave up their childlike creativity, imagination, and geekery- that's part of what enables them to be successful, but now they have the discipline and knowledge to make something out of those traits. They still enjoy nerdy or childlike things or dancing in the rain, but they also value personal boundaries like going to bed on time, exercising, living within a budget, and being responsible for their own growth and development. "Grown up" doesn't have to be synonymous with "boring poop."