It ends when you are satisfied with how far you’ve come. I’ve virtually looked the same in the last year (I’ve plateaued hard and I still look pretty average to in a large T shirt), but have come to terms with the fact that this is the best I can do for now. There are other faucets to life besides fitness, looking lean or semi muscular is pretty frickin dope already, just focus your energy on other hobbies so it doesn’t feel overwhelmingly important to get “bigger”.