How difficult is it to quit using heavy drugs like cocain or heroin ? And then I am thinking most of the physical problems, and not so much about the psycholigical problems/"needs or longing for drugs" that probably last a longer time. If you are a user of heroin and quit totally for lets say 3 days, are you then more or less over it ? Is it then psychically easy to not start again ?How difficult is it to get through the first 1-5 days ? Is it right to say about the drug-misusers: "They can stop the drug-misuse if they want to" ?