My brother Thebo,
I'm glad you are helping others with your talents, buddy. I'm sure it feels good.
I like how you said that the heroin addicts you help are not "throw away people". That indicates to me that you can see the value of their humanity, deep down inside them.
Has it occurred to you that perhaps they can also see the value of YOUR humanity, deep down inside you?
It's there, buddy. You are not a "throw away person", any more than they are. You all have worth and value. Perhaps by seeing their value and letting them see yours, you will begin to see your own value in yourself? I sure hope so, bro.
You are doing a great and noble thing. Not everyone could do what you are doing. In my book, that makes you a hero.
Your loving brother, as always,