Sorry you are in such an unhealthy relationship and you happen to also have a young child and I am sure you worry about your child's welfare too.

Sometimes things happen that make a person face themselves and their situation and FINALLY decide to ask for help. Unfortunately, alcohol can play a big role when it comes to a person letting their guard down and doing really "stupid" things. You can't change what happened, but you can most definitely learn from it and as you have done so here, finally ask for help and guidance, hey, you are only human and we can all use help and guidance at different points in our lives. It would benefit you if you looked into finding a therapist so you can vent these challenges and get help and guidance about making some important life decisions because you are most definitely in an unhappy relationship and you deserve to be happier and more fulfilled in your life and that could mean ending this relationship. Your wife should be seeking therapy as well so she can work on her issues, it would be better for not only her, but, your child as well.

So, consider this recent bad choice of yours to be a wake up call that you need to find help and guidance because you are "stuck" and need help moving forward in your life because things can't go on like they have been, it's unhealthy for you, your wife, and your child.