One of the best pieces of advice is to completely separate and isolate your work life from your social life. Build a wall around both and don't mix them, learned the lesson the hard way after a decade in the industry

It keeps your work life clean of any distractions and forces you to build and maintain a social network that isn't tied to your work. Also cuts out a lot of emotions from decision making.

Go to work, get your work done, and leave.