What are some careers that aren’t extremely stressful?

Every job i’ve ever had has been extremely stressful. I’m a hard worker, I have put every fibre of my being into my work my whole life. I’m exhausted. I’ve paid my dues, I really just want to be in a field or at a company where there isn’t extreme stress every single day. I want flexibility to have a life. It’s eating me alive. Any recommendations are welcome. At this point, i’ll go back to school if I have to.