Welcome to the Forum Arya!!
Support is very important, our minds tell us to drink, we'll even convince ourselves we don't even have a problem after a while, and so we need to short circuit those thought processes by surrounding ourselves with a support network, some use AA, but there are plenty of other options, different kinds of meetings, and SR is here also to provide loads of support!!
It's going to be tough with your line of work, it's going to take some extreme measures to make this work, when I got Sober I had to revolutionise the people I hung out with and the activities I got involved in, and that's probably going to be case about the after work drinking culture of working in bars!!
It can be done, get a plan together and go for it!!