ENTPs are, ironically, a lot chiller than the usually highly wound-up INTPs.
Funny that you should say that. My INTP friend has this tendency to get so depressed and pessimistic. He just applies this withering criticism to everything. And, he's so tough on himself, especially. It takes a lot of work for me to buoy his spirits.
"Create like a god, command like a king, work like a slave."