Bro, don't think it's already too late to change your lifestyle. You're not a dirty-bearded 59 year old man wearing an open bathrobe with no shirt on, sitting a broken recliner outside of his trailer drinking a tall-can at 9:37 in the morning.

Like K_A said, drinking and drugs won't necessarily ruin your life, but if you're prioritizing them before doing things that would actually benefit your life in the long run (AKA a job, family, not necessarily friends because a lot of the times in a lifestyle like ours we only befriended those people because they were doing the same) then yes, they can definitely ruin your life.

Take it from me, a person who did nothing but get drunk, stay high 5 days out of the week like it was a day job. To be honest, I really didn't know what to do with my life. I had given up, and was confused with why it all mattered. I wouldn't take care of myself and was with whatever. Having a kid changed that for me, it gave me a reason.. It might not have been the reason that I wanted, or a reason that would work for you, but I was happy enough it was there for me to make a decision. It was either be high and not give a fuck, or be happy with life and that I have a reason for it. Feels like when you're doing one, the others getting away.

It's not easy to change, it's gonna be a struggle. I'm still fighting urges to pop pills, especially when I have lots of work and stressing. But I know that I'm better than that and don't need them to function. That's just your mind fucking with you, I usually just go do something else. Withdrawal's a bitch and can inflate your feelings of anger, hate, and depression even if the smallest issue occurs.

In the end, you'll feel a lot better when it's all in the past.

On a side note, at least you're not in denial lol.