Good health, great food, mind blowing sex, some quality friendships, financial success & security, decent expereince and may be a relationship along the way with the overall theme being a really happy life, so when it's time to go I would tell myself that I've already done everything I wanted to in this lifetime.
When I was a kid (16), all I wanted was to work in the factory with my old man & someday find a girl who would settle for me.
I ended up with an adventurous youth, then a good trade with good money.
And a wife who is really more then I deserve, & she thinks the same about me.
Got a decent kid, & a few good friends.
Life really doesn't get any better than this.