Greetings, I'm glad we've all identified with this sentiment at some point. Regarding what you're saying, some days are better than others. I always try to stay in high spirits. This year, I've been looking for things/activities I really like or discovering which ones I enjoy. There are also days when I dance and sing at home, and occasionally play a video game, but not for too long to avoid being unproductive.
RE: Moments of exhaustion