For some people its easier to let emotions out by writting. Most artist and rappers are the same. To let emotions out you use a pad and pen. There are lots of things I write that I dont mean to right but emotions get the better and in the moment I just write it. Then after I cool down I delete some of them if I feel there are not the best things for people to see.
Especially trying to cool down from poker after thaving the worst runs. I let it boil up in my mind so I must release it and write it down. Thats all. Sometimes I am a idiot but try my best not to be.