I can relate so much xD. I used to offer personal training earlier and well, that sucked the living juice out of me.
The problem is I care too much about the value I provide and when my client isn't following something or want something changed, I do it when I could just slap a "This wasn't part of the deal". Sometimes, I am excited but my client isn't. It's frustrating.
It would be fun to be able to train people that are atleast motivated.