Sometimes I feel like i have no exit.. desperation.... do yu guys feel the same way?

Sometimes I have so many things to do, but I don't feel like doing anything. I feel like I have to do all that. I can't get it out of my head until I finish and do it well. Sometimes I feel so empty but I don't know why. Maybe I missing something. I can't stand the feeling of pressure. Sometimes I want to do so many things when I am the busiest but I don't feel like doing anything. Sometimes it's the opposite case. I'm not an expert but I know that humans are complicated people.