He might be right.
However, he could also be wrong. There is some evidence therapy works by stimulating the growth of new brain cells (neurogenesis) in the hippocampal regions of the brain. This is the same mechanism by which antidepressants seem to work. The problem is that benzodiazepines inhibit hippocampal neurogenesis (see: Boldrini M, 2014; Nochi R, 2013; Sun Y, 2013; Wu X, 2009; Stefovska VG, 2008).
But the only way of knowing whether a benzodiazepine may aid the effectiveness of your therapy is to try it.
If your SSRI isn't working then there is no point in taking it? Which med are you on, how much are you taking and how long have you been at this dose?oh and I'm on long-term ssri's which don't touch the sides