Did I make a good decision?

20m at university in first year because I took a year out.

I’m a kinda anxious person bad at meeting new people but I’ve been making like all the lifestyle changes recently. Cutting my calories (not fat or even really chubby but could lose a little round the middle if you get me) going to the gym and trying to push myself to be more social as well as studying more

Tonight my plans where to get to study and get to bed early but then my accommodation posted downstairs they’re giving away free drinks and food and I went because I was anxious about going and thought well if I’m anxious then I have to go because I’m pushing myself to do things that make me anxious.

I’ve drank a good bit, talked to a few people but nothing crazy and ate a bunch now then went back to my room cuz it kinda died idk what to feel because I totally just set myself back workout wise and this feels like it wasn’t worth it as I can never sleep well if I drink so I have to wait to sober up first to do that so I’ll be tired in tomorrows classes but also I did the thing I was anxious about going to. But was it the right decision I feel guilty?