sometimes it does do things about the feelings. for example my past diagnosis was DID. I had many different memories and feelings that I shut off from myself and did not allow myself to feel or know about. that in turn caused a lot of problems and confusion for me. But once I stopped shutting those memories and feelings off away from myself I learned a lot about my past, and how and why I relate, react the way I do today to normal every day situations, emotions, feelings.

because I allowed myself to feel and know about those things and feelings I now am able to feel a full range of feelings, and know that theres nothing wrong with how I feel and its ok to be mad when something makes me feel mad, its ok to cry when I feel like crying, its ok to feel hurt when I feel hurt.. by sitting with my feelings I have also learned how to better cope with my life, relationships, work, stress, all kinds of things.

therapeutically and medically its not about the feelings per se, its about what a human being needs in order to be healthy. A person can stuff, ignore, shut out how they feel only so long before it starts to cause problems with their lives through medical problems (ie ulcers, stomach, digestion, high blood pressure and others,) or mental problems (Dissociative disorders, PTSD, anxiety, depression, phobias, eating disorders, among others)

only you can do something about how you feel like taking a walk when you feel depressed or closed in, talking out a problem when you feel sad or angry about having a fight with someone... but leaving feelings all bottled up, undealt with can cause mental and physical health problems. so its suggested to people in therapy to sit with their feelings and talk about them instead of leaving them all bottled up, shut out, ignored.