If you enjoy the goal, but not the process, there's a term for it - it's called a grind. It's no different from weight loss or any other unpleasant chores. You choose to temporarily suffer in order to accomplish the goal. Incidentally, after reading a bunch of biographies, I think many high-achievers are into suffering, they get a kick out of it. Someone like Goggins makes it explicit, but I think it's fairly prevalent.
I should read Goggins. I just saw an interview with him. It looks like you need a huge amount of willpower and motivation. However, willpower is taxing for the brain, which tries to avoid it unless absolutely necessary.
Some people might say "But I only enjoy video games!" and if that's the case, I don't really know what to say to that. All the people I know who have found great alignment with a path of progress are ones where the effort tickles an itch they would have regardless, so might as well scratch that itch.
And there are still goals, that doesn't change.