Some famous football coach described his job as leading his players to do what they don't want to do, so they can achieve what they want to achieve.
Seems like this applies to life. There are lots of things we really want to do, all the time. But you can't do what you want to do all the time. You can't drive through a red light just because you want to. You can't take items from a store without paying for them. The immediate consequences might not be pleasant, and most people consider the risks to be greater than the possible benefits.
Doing hard things can lead to good things. It's a truism that nothing worthwhile is easy. Some will hear an outstanding piano performance and say, "I'd give anything to play piano like that!" No they wouldn't. They are not giving music the attention and energy required. The pianist has surely given so much to achieve that level of proficiency: time, study, practice, money, effort.
That's what spiritual disciplines are all about. They are are an outlay of effort toward the end of spiritual development. Some disciplines may be enjoyable for some people. The discipline of fellowship can be most enjoyable, and so can the discipline of solitude. I guess there are those who enjoy fasting and scripture memory. But whether you like them or not, spiritual disciplines are effort aimed at greater goal.
Another truism is that everybody wants to be better, but nobody wants to change.
We can change our habits so that, over time, we can become a better version of ourselves. We can do what we don't want to do, to achieve what we want to achieve.