I feel like a loser

I'm a "vegan" if that's what you really wanna call me but sometimes I snack on bad foods 😫 like my dad made his AMAZING buffalo chicken dip and I just couldn't resist so I grabbed a couple of chips and dipped like 4 times and now I just feel so loser like. I've been on this new lifestyle change for about a month and a half now and I always do dumb stuff like this. Like I'll occasionally have a couple of cheez-itz if there's like a bag on the table or I'll try one of my moms cupcakes that she's so proud of that contains eggs & butter 😩 & MY SELF DISCIPLINE JUST SUCKS YALL 😫 How can I get THAT up?