For me, it does absolutely jackshit and is a big waste of time and energy. While I haven't had to pay for mine as most of my mine was at my alma mater (university and college), I'd imagine it would be a waste of money (even on a sliding scale or free counseling). If I had to pay a lot, I'd be even more resentful and bitter than I already am. In my whole life, I have been over at least a dozen therapists, including social workers, and even one psychiatrist (when I was in elementary school). It doesn't do shit for me.
What has truly helped me was being able to find the root problems (by myself of course, since I have no one who understands me IRL), finding my own solutions, and then actively pursuing said solutions. That alone has helped me more than therapy (an anagram for 'prayeth' just for the lolz) and religion itself (I'm an atheist and also skeptical by default so believing without concrete and substantial proof is against my character/nature).
@Meretlein Same here, and yes, I also concur with you that for some people, it helps them which is great for them, but it isn't for everyone (unlike what society, media, and others keep trying to push).