Im scared to go to therapy.

Im just ready for this mental stuff to be fixed. And therapy likes to take over 100 years. What's the point if they aren't going to fix me? Also if I don't find the right person I will have to look again and waste my time again. Im honestly annoyed, drained, and just want to be fixed.

May I add I have been in CBT and others I don't rmb and different therapists all my life (I'm 17). So I'm already drained.