Wow. That's so wrong I don't even know where to start.
A lot of people go to therapy because they have problems but they have no idea what in the hell to do about it. They feel overwhelmed by their problems---if they knew how to fix them, and felt like they could on their own, THEY WOULD. If I knew how to fix my problems all on my own, I wouldn't be paying someone $800/mo (PLUS a psychiatrist, PLUS meds) to try and help me do it!
It's not a matter of NOT KNOWING. The therapist is there to help you come up with a game plan, set up a step-by-step plan (even tiny baby steps if you need them). What they CAN'T do is give you the will to do it. (Well..they can help you work on the issues that underly it, but they can't jam the will down your throat)