Thank you everyone, I am very grateful I stopped it at the one night but am still disappointed.
Completely right on the never letting my guard down, again it wasn't planned or craved and it just led to oblivion. I can't get complacent either, I have had a bad habit of that. Time to kick that habit, get over this slip up and get back on track as I have so much to look forward to.
Thank you for the advice and for always being a place I can turn to, even at my lowest. Beyond grateful for you all.