Stimulant Addiction??

I'm 20 years old and I am mentally addicted to a chemical called 4mmc a.k.a mephedrone its a powerful synthetic stimulant. Same chemical in the bath salt and plant food designer drug. I've been snorting meph for 3 months and I get a huge rush and euphoria from it..I don't want to be without it and its costing me a lot of money that I don't have. meph is a newer drug and not much about it is known except that is a synthetic cocaine and ecstasy. I need help just don't know to go about it. Im doing and premeditating 3 day binges all the time. I want to stop but at the same time nothing has ever given me the happiness that meph gives me. I'm confused and want out of this hold.