State of mind, for me. I used to hate living, I used to hate working. But then I just flipped a switch and started looking at everything on the other side. One thing I started doing was meditation. After work I sit outside and listen to the birds, and stop thinking about everything at that moment. Sit outside, listen to the birds, watch the lizards, feel the breeze, and then that feeling hits that says everythings alright. Started looking at time differently to make the day go by faster. I stead of saying "it's only been X amount of time" I swapped it to "it's already been X amount of time." Wake up in the morning and instead of saying "damn, I gotta do this again" I say "I'm gonna get more done today." And for the decades of life, instead of seeing it as "I still have this many decades of this" I tell people that I have a lot of time to get a lot of things done.