it's resonance. that's all it is
it is when you are able to get satisfaction, enjoyment, etc. out of doing whatever it is you're doing, that outweighs the time and energy you put into it.
this is why people can work constantly and never take breaks and never get tired; because what they get OUT of it makes up for it. when this stops being the case for some reason, that's where burnout occurs.
when someone resonates with an activity right away to the point where they take to it and spend all their time doing it and get good really fast, we refer to that as "talent".
when someone has to take a bit of time, put some energy in learning the basics, and then it begins to resonate with them, we refer to that as "hard work".
but neither of these things are the cause. we develop skills because they return an emotional benefit that overcomes the energy being put in. we maintain habits for the same reason.
if you're not good at what you're doing yet, that doesn't mean you never will, and if you're finding it hard to motivate yourself, you need to look at why it is you're doing the thing; if it's anything other than "because i find it fun", you're not feeling that emotional return, and something needs to change.
that's my theory

