Every time I invent a character, he has to have some similarity to me, or else I can't write well with him. I put all my emotions on the character. If I'm sad, my character is sad. If I'm angry, so is my character. Etc. etc.
For instance, one time someone told me I was blind towards everything, and then I got the idea to write as a blind person. But I didn't feel write about how I was writing, so I closed my eyes for at least two hours, without opening them. Not to scratch them, or anything. I was at school too! So walking to classes was difficult. I had people lead me to class, and everything. It made it SOOO much easier to write.
That's why I write. It's sort of a release, but more like, I'm putting my burdens on my character, so I don't have to worry about it.