re: At what point do you go and see a therapist/ Do they really help?

Short answer is yes, therapists can work, if you find the right one. It's most likely a combination of something both physical and mental. That is, the synapses in your brain that guide your emotions might not fire in a normal range, and medication could help with that. It could also be low testosterone, or maybe you aren't getting enough sleep, or you have a poor diet. But how you think about things plays an equal if not more important part. A good therapist can help you sort through that.

I know - there are a lot of people who embrace victimhood, or expect someone else to fix them because they aren't happy, or just feel sorry for themselves --- and they do need to suck it up and put in more effort. But there are also plenty of people who try really hard but there's a sadness or anger they just can't shake. Those people could benefit greatly by seeing a therapist.