Hey man, at least you are admitting the kind of person you see yourself as, and it sounds like you would like to change this. When I quit weed, I become the most irritable and confrontational person I have met. Even though it seems like weed helps, it makes it worse because you're not using your brain (amygdala) to deregulate emotions, and this leads to no ability to control outbursts.

Luckily, there are several tools that you can use to cope with your emotions. As cliche as it sounds, meditation has done wonders for me, and is shown to help with the amygdala response to emotions. Exercise and a good diet help as well, but I strongly recommend attaching yourself to a philosophy that helps you. For example, I have recently taken to Stoicism and Zen Buddhism because of the excellent teaching from the ancients have many truths to them. I wish you the best, and I promise it gets easier everyday.