There’s 2 categories that the willingness to do something comes from.
Intrinsic and extrinsic motivators.
An intrinsic motivator would be doing something because you want to do so with no expectation other than personal satisfaction.
For example, being a professional footballer because you love the game of football and it brings you satisfaction and reward at a mental level when you play.
An extrinsic motivator would be doing something with the expectation of an external consequence or reward.
For example, a professional footballer playing the game because they’re chasing the money, status and fame rather than because of their love for the sport and the personal satisfaction it brings them.
This could also be applied to doing something with the intention to impress somebody else. For example, getting lean enough to have abs because you want acceptance and approval from others.
So this is where I now turn it to fitness.
You need to be intrinsically motivated in order to survive the long game.
Health and fitness we know is a long haul flight rather than popping to ibiza with the lads. It’s not just in your 20s or 30s when you’re young, trying to meet and impress someone of the opposite sex.
Having the goal of wanting a beach body because you literally want to go to the beach, show it off, and impress your mates is very much the wrong way of doing it.
The moment that happens, you will no longer have a motivating factor egging you on.
On the other side of the coin, intrinsic motivation carries on for as long as YOU are motivated.
Do something, fitness or not because you are intrinsically motivated because you WANT to do it for YOUR pleasure with NO EXTERNAL REWARD expected.