I went from pretty much never exercising in my life until I was 37 years old to working out 3 times/week missing only about 10 workouts in 3 years. I was completely sedentary, never played a competitive sport, was last place in my high schools "presidential fitness test".

I still do not actually "enjoy" it, but I made it a habit and kept motivation to go because of two things: progress and goals. As a beginning lifter, you make ridiculous progress that seems absurd (adding weight and becoming stronger every other day) which to me was really an amazing sort of "hack". I plan to write more on how motivating this kind of linear progress is and how to form a habit around it.

Now, even though I do not actually enjoy exercise, it has become a habit similar to brushing/flossing my teeth. Not particularly enjoyable, but something I just know I have to do.