It depends. All the times I did therapy, it was either useless or harmful. One of the times I did it, I got much worse due to it because the psychiatrist I did therapy with was a pretty abusive and crappy person.
This book is an interesting one on what could go wrong with therapy: https://www.amazon.com/gp/product/1403947406/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1