Age motivates me.
Things get harder and harder as you age. The body changes and you lose muscle as well as other things. I want to be able to walk, talk, lift a bag of groceries on my own. I want to be able to take care of myself.
Not having to go to doctors motivates me.
Not having to spend all my money on clothes, furniture, space, because I'm over weight motivates me.
The poor quality of food, food handling, food costs, poor nutrition, motivates me to cook and make better choices.
Money motivates me. It costs more to be unhealthy.
I injured myself a while back ( a couple of years) and i am still rehabbing the injury. It makes me tired, exhausted, but I still go to the gym. I take breaks occasionally skipping 1-2 days.
The entire episode would have been even worse had i not taken care of myself.