No, it's not exactly what you're thinking.  Get your mind out of the gutter.  Listen in to hear about an article that was able to pinpoint exactly how I have been feeling.

Find the original article here: https://thestripe.com/a-lack-of-stamina/ 

Find Grace Atwood here: https://www.instagram.com/graceatwood/ 

And loudly enough for everyone in the back:
“Be nicer to yourself. Easy to say to others, harder to say to yourself.”  - Grace Atwood