I actually just had this realization when I was lifting weights.
Initially I just wanted to lose weight and I had this idea of where I’d be once I did. Then I got to my goal weight and that wasn’t it. Now if I stop lifting, exercising and eating healthily all of my progress will eventually be gone; it’s a life long process not just something to do for awhile until I reach some goal.
I think it’s something I should apply to my professional life as well but it can be scary to take your foot off of the gas. I’ve done it in the past for the wrong reasons and wound up regretting it.