Sohard, I'm glad you're here and posting.
I'm sorry you drank last night, but, yes, you have the power to be sober, and of course, you have learned a lot during your 474 days of sobriety. Focus on how good you felt during your recovery and all the improvements in your life during that time.
I think it would be a good idea to understand why you drank last night and then make a plan so that it doesn't happen again.