Thank you for your responses. I did go in once a little drunk and it left me in a jubilant mood, I recall smiling for most of the session which is a rarity but like most of you said it isn't a good idea as it does hinder the process.
I am contemplating going in quite drunk to the next session as I find have no problem talking in that state.
I find it quite difficult talking as a majority of the time I am overtaken by shame and once that kicks in I can no longer say what I want, I end up stuttering, when my t senses this he changes the subject and takes a lighter route, which at times I find annoying, I often leave disappointed with myself.