Welcome, sir. Congratulations on the best decision you've ever made. We are here to help with anything you need. Reach out to some folks and get numbers. Then use them. The brotherhood here builds accountability. That's how we roll. Shoot any of us a PM and we'll hook you up.
Oh..... your brickmason boss was an asshole. He has sent you down a path of destruction and betrayal. We all have similar stories, and we need to focus on our past so that we don't repeat it. I never want to suffer through the agony of withdrawals again, so I am quit today.
As for the side effects - you'll have a wide range of them. They'll be troubling at first, until you learn to appreciate them. As your quit progresses, you'll start to see the better stuff happening. I won't spoil the surprises, but your body will thank you.