(I'm 28.) I'd tell myself to focus a bit more on finishing up my PhD than following dead ends. That and go outside more and eat better. It took ~2-2.5 years af

(I'm 28.) I'd tell myself to focus a bit more on finishing up my PhD than following dead ends. That and go outside more and eat better. It took ~2-2.5 years after graduating to regain sanity and lose ~50 pounds. And I'm pretty happy with my current job. Generally, I'd say that's advice I'm going to try to stick to (whether it's a job, PhD, whatever): focus more, go outside more, and maybe eat some vegetables every once in a while.