Quitforme,
I miss being numb too sometimes. Taking the easy way out from feeling feelings that are not the most pleasant. But given what I know about my relationship with alcohol or weed I know that is not healthy or productive for me. It is the opposite, using drugs and alcohol as a way to escape (or at least provide the illusion of escape) is self-destructive to me physically, psychologically, and metaphysically. I'd rather have the pride and self-confidence that comes with working through my difficulties than temporary numbness. Yes, I miss it, but the losses I would experience as a result of indulging in it have been enough to keep me away from it so far, plus the incredible support I receive at SR.
Also, your therapist could easily be way off base when it comes to the why you are feeling down. Only you can determine what is causing your difficult feelings.