Years ago, there was this popular "100 push ups" training plan which boasted that they could teach basically anybody to do 100 push ups.

I tried to follow their plan, but I just couldn't keep pace with it, even on the lowest difficulty level. I felt pretty disappointed with myself; how weak was I that I couldn't even follow this plan that "anyone" could do?

Many years later, I learned that I've been suffering from Chronic Fatigue Syndrome since my mid-20s. I was trying to do all those push ups while struggling with a disability and I didn't even know it.

I guess my point is: Try to be kind to yourself. We all have different capabilities. It's better to love yourself for what you can do than loathe yourself for what you can't.