Ive seen Coke Destroy even the friendliest of souls.
I used to know a very nice genuine man, he would say things like "people with special needs and such are no different to us" and he was such a caring man.
He started a cocaine habit,, which turned into addiction and he became an arsehole.
He lost hes House, Hes wife, hes kids, hes car, everything.
And my dad as a best mate too.
It tricks the reward system , therefore you no longer need to do good deeds for yourself or others, all you need is Coke.
I hope you get clean Op. Please go to rehab, dont let this drug take your life, your worth much more than that white stuff, All the best and good luck!