The only way to beat the white powder I believe is to face your demons head on, for me we always do something for a reason be it an escape from something or otherwise. Perhaps have a little chat with your doctor and I'm sure they'd love to be able to help you, you could also try writing a letter to the drug and try to imagine it as a person (may sound silly but it works) telling the drug that you need to leave it behind and can no longer support it. I wish you so much love and luck in whatever the future brings, take care

xx