I think life's too short to dwell on what you don't have, because at the end of the day you're given just this life to do what you want with it and it'd be pitiful if it were not made to be at least somewhat pleasant. For example, I'm newly found in an environment where everyone is as smart or smarter than me, but I try to remind myself that being part of this crowd makes me sufficiently smart (this is a common pitfall in people who go to Ivy League schools, but it can happen to anyone including me). I also don't have a husband and will likely never have one thanks to some mild trauma, but I think each civil status has their pros and cons, and I don't believe being single puts me in a disadvantage to happiness compared to my married peers.
I think many people don't realize this (and of course, some disorders like depression may prevent the ability all together), but at the same time that our brains control everything about our beings, we also have the power to control our brains. We know what triggers its dopamine pathway. If that's playing video games, play them. Play so you may take away the stress from work, or the stress from not having the perfect life.
Funny thing you mention that you miss high school. However I'm sure there were times in high school when you wanted it to be over asap. Humans are by nature difficult to satisfy- if they are busy they want a break, and when they're unemployed they want work. It's more important to find happiness in the present, than to desperately look for a state of being where you're 100% satisfied, because as long as you're human, that state unfortunately doesn't exist.