8hrs? Hardly typical.

Common stress reducing tactics are

1) substances 2) sex 3) delusions of grandeur 4) myth of control (over things you can't control, like short term market movements) 5) interviewing for other jobs / negotiating more comp

None of this is helped by the fact that financial service fees are in secular decline, alpha is harder than ever to come by, and every day the machines take yet another trader's job.