Welcome Justin.
This is a great place to get and give support, I’m happy you found us. I’m an alcoholic and I been very active on this forum for all of my sobriety. I got to meetings now too.
I too felt depressed and hopeless for other reasons. Living with an active alcoholic. I too felt that hopelessness. But I kept going back to meetings. My Al-Anon meetings. I found about 8 different meetings I could go to a week if I wanted to. Sometimes I did. I just kept going back. Then I found hope in the rooms. Then I started to find hope for myself. I just kept going back. My life was 
unmanageable. Then I started going to AA.
Will power is not going to cut it. I need surrender. And that meant pouring my guts out and breaking down and crying in front of total strangers. People that know me say I still cry.
I don’t know first hand what it’s like to be addicted to heroin or that kratom stuff. But my daughter was is a recovering heroin addict. And my son is a recovering alcoholic drug addict. Will power never helped them either. Rehab and 12 step meetings and sober living got them to a point that they are recovered. It was a very long slog.
I’m very sorry for the pain and suffering you are going through. Search up in the magnifying glass top right for heroin or whatever. There are many people here with all sorts of addiction. You aren’t alone.
Find a meeting and spill your guts. Keeping it inside is trying to control it. We cannot control it. And we can’t cure it.
But, it’s the sharing that heals. Not the person that listens.
Believing In Myself