While its not the answer for everyone, I went independent again.  I pick and choose my customers, and what I work on and when.  Sometimes even the sales part of the Indie life can keep you from burning out.

I also enjoy teaching.  Blogging, YouTube videos, SQL Saturdays...all keep me on my toes and learning new things or old things better.  And anyone can do this...W-2 folks or other.

As pwhoyt said...keep a good work life balance.  Have a hobby, preferably one that has you moving (binging Walking Dead is not a hobby!).  Family first!