It sounds to me like your mom is concerned about the road you're on. Comparing your behavior to others' and coming up with justifications for your own behavior isn't a healthy way to look at your life. Any time we compare, we're in trouble with our perspective.

Here's the thing: You have diagnosed yourself as having depression. Now it's time to talk to a mental health professional about treatment, whether that be therapy, medication, or both. Mj and self-medicating will lead you to a place you will regret having ended up in. I can promise you that.