One day, one hour, one minute, or even one second at a time. Just know that the feelings you are trying to escape from are real, and they will be there when you sober up too. Just address the feelings, that is the best way to deal with this insanity we have to live with.
I think that it is really common to be Bipolar and to self medicate, I know that I have that tendency. Most other people with BP I know have the same tendencies.
We are here for you, you can get by. On a crappy day like this it is tempting to escape. But you can do this.