Meth addiction

I have struggled off and on with meth for 8 years. I was even in some legal trouble I'm currently on probation and I only have one month left until I finish. But I struggle with meth because my neighbor in my apartment complex uses meth and always has it and knows how to get it deeply influences me. I don't like it because I lose weight and it changes my personality. I feel so much better without it but now that I'm in the throes of using it again it's really extra hard this time because of my neighbor I don't know what to do anybody have any suggestions or advice??