Yes, sharing your feelings helps you feel better. It "releases" the emotions. I have a lot of anger over what has happened to me. My psychologist tells me to bring it to him and leave it in his office--OR--tell a friend, a close friend, what I am upset about, and that will help me get rid of it and feel better.

The other part of this, is that people are social creatures, even if they are shy and introverted. It is not natural for them to be solitary. Think of it--the put prisoners in isolation to control them and as interrogation techniques to break them down mentally. If you spend time with other human beings it will have a positive effect on your spirits. Too much time alone will be negative, even if you are a person who does enjoy time by yourself. Does this make sense to you? Does to me. Plus I've noticed, if I'm down in the dumps and hubby encourages me to do a social thing, like go and play cards with friends, it really, really does lift my spirits almost every time.