Christian People

My name is Kase and I don't masturbate that much but my friend said that I shouldn't because it is a sin and will make it harder for me to have sex when I get married. I am Christian and I don't think it is bad, I think it helps me get rid of lustful thoughts. I go to a private school and everybody in my grade says that they don't do it because it's gross. Are there any Christian readers that agree with me that masturbating helps get rid of sinful thoughts?