Alcohol seems to ruin most of my relationships?
How do I prevent that from happening?
I’m in a new relationship and I really don’t want to mess it up already.
Remove alcohol
You know the answer is to stop drinking and seek mental therapy. You got this Cindra 

I too work in the culinary arts & have had this problem before. First & foremost you need to be able to not date for the 1st year of your journey in sobriety. In that year you are going to go through a lot. Many other AA members will tell you this also, don't rush the process of your sobriety and getting back to loving yourself. (Because for however long you were drinking, you weren't loving yourself you were nun ing yourself.) If your new partner is willing and able to understand this and still are willing to go with you through this journey of growth and self lovez then maybe then it may work.
Definitely ditch the alcohol. I was with a woman who was an alcoholic. She would do things to me that I wouldn't say to trigger anyone here. Having an alcohol problem will definitely ruin relationships just like drugs will and I can attest it because I'm sober from drug addiction. YOU CAN DO THIS!!!! DITCH THE ALCOHOL!!!