It really depends. Like if I'm mad, and would wanna calm myself down, I would log in my character in Uncharted Waters Online and try* to kill NPC pirates. I'm pouring out my rage on them lol. Good thing about sea battles in UWO is that you can kill just about any NPC ship you meet, and run from random sea battles which are difficult to deal with.
*Try- 'Cause sometimes I'm the one who gets killed lol.