If anything stops me from going to gym (I do weightlifting there - usually 4-5 times / week ) it's usually something that's worth skipping gym. In my recent lasts that has been either - social activities that I value more then gym (doesn't happen that often) - you can normally scedule that part of your life - Work that pays off that well that skipping gym is worth it. For example , I have a small company w/ a friend…
For example, my goal is to get bigger (build up more muscles & get stronger) - and I can monitor my progress - which generates motivation ("oh today I was able to do this exercise with more weight then the last time!")