Proponents of more "evidence based" psychotherapies usually oversell their "scientific" rigour (even if there are several question on their reproducibility) while usually leaving the patient's own characteristics in the background plane (or just ignoring it).

Realizing what you are feeling/thinking and being able to say that is halfway to the solution.

And yes, it is very dependant on practitioner and on the patient's own willingness. (In the same way exercise is good but if you run 100m per day or lift light weights at the gym it won't do much)