I need to know everything I can about Cocaine addiction. Such as?

How does it feel? Why keep doing it, behaviors before, during, after? Why hurt the people you love? What would you do to get a hit? Is that the most important thing in your life? Do you put it first? How can someone help you quit?
Just so everyone knows, I have searched far and wide for answers on the net. I want personal experiences.
BYW, it is not me doing it, but it is someone I love deeply.
I meant btw.

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