PSA: Stretch!
Monday morning, I hurt my back. My upper back, and not too badly; I've hurt it worse in the past.
It was my own fault. I tried to put a shirt on. If you're going to do such a hedonistically irresponsible thing in the morning, I suppose you have to expect the occasional pulled back or broken neck.
Having hurt my back before, I have a set of back stretches. I know that if I do them regularly, my back feels better and I'm much less likely to hurt it. I, of course, don't do them regularly. I have, however, done them all this last week, and they got my back feeling better relatively quickly.
Now, let's talk about you. You're getting older. You are, I feel it safe to say, older today than you were a year ago, and quite a bit older than you were a decade ago. So stretch. Every day. Not only does it reduce your risk of injury, it makes you feel better each day.
Also, exercise regularly and improve your diet. And stop the heroin. Not all at once; that's dangerous. It's best to taper off gradually.