Ty Braxton, 23, continues to hide his fun and fulfilling life from the full-time employees of Hale & Dorr, the Boston law firm for which he has temped since July. “At a job like this, where you’re surrounded by angry, perpetually stressed-out lawyers who are working 80 hours a week, it’s important to hide the fact that you’re enjoying a normal, balanced, happy life,” Braxton said Monday. “People get really pissed when they hear stuff like that.”…