Is psychotherapy still necessary?

Hello, I've been thinking about going to therapy for three years but never had the courage to go through with it. I've just had my trial session and talked a lot there, but I've realized that I don't really know what to talk about. I don't know if my problems are enough to warrant therapy at all. Before the trial session, I had a nervous breakdown for three nights and asked myself what was wrong with me, but now after the session I'm feeling better and I'm a bit confused as to what I should talk about. Does that mean that I simply don't have enough reasons and am imagining it all, and that therapy isn't actually necessary? Or that I should continue with it anyway?