You don't talk "about" feelings in therapy, you express them, as you are feeling them!

"I feel really anxious when we talk about my stepmother's anger".

"It hurts when I remember my father leaving me with a neighbor when I was four. I knew he was never coming back and when my crying did not convince him to stay/take me with him, I gave up; I feel like something broke then".

"I shut down last week when you yelled at me. I have been thinking about what you said and was hurt and angry that you were criticizing me but then realized that you were trying to warn me, show me how my behavior, if I do not change it (instead of doing the "same thing I always do"), could hurt our work here."

"I like it when you say that (whatever), it makes me feel good."

Outside of therapy we acknowledge what we are feeling to ourselves and use that information (along with our thinking about the situation -- not the feeling!) to help us decide on what action(s) we want to take.