Need an add on medication for Cymbalta? (for OCD)?

I am on 60mg of Cymbalta for major depression and OCD and have taken it since october, i also sometimes take Xanax .5 mg for sleep. I noticed a couple times felt like my mind felt much faster and clearer and i am not sure if it was the xanax doing it but i would like to get this effect back. I was wondering if there is an add on drug that can help me think like this again without being as dangerous as benzos. I have OCD and my counselor thinks that it is likely that when the obsessive thoughts stopped although i cant tell if they did i was able to think faster and not drain my serotonin like I was. Suggestions?