First and foremost: the world would be stable- our leaders would lead with the people's best interests at heart, our businessmen would have a sense of morals that they would place above any short-term profit chasing. I wouldn't have to worry about ecological devastation, war, civil unrest, and income inequality like I constantly do now. Anything else, I can pretty much deal with.
For added niceties, though:
-I'd find my soulmate- the type of person you just naturally play off of, who you never feel like you're 'faking it' around. The person who you might face troubles with, but always know you can and must work through because they're worth it. We'd watch terrible movies together, swap stories from our video games, and dress up fancy for a dinner at Denny's because of how funny it would be.
-I'd live in a small community close to nature. A town or small city in upstate New York or Vermont, probably. I'd get down to the big city once or twice a year.
-I'd have a stable job at a nonprofit, preferably as a teacher or something. It wouldn't make me rich, but it'd be comfortable, and it'd give a great sense of purpose.
-A couple of cats and dogs, but no kids.
Essentially, I want to live in Stardew Valley.