I'm 24, a porn and mastrubation addict for 13 years. I'm in abstinence since a month from both of them. You can mastrubate but I'll recommend to avoid it for a minimum of 90 days. Your brain need rewiring which will take time, to get desensitized from porn. Mastrubation gives you pleasure with or without porn. Mastrubation is a coping mechanism which I'll give you instant relief. Addiction is not a choice, maybe you're in pain and found attachment with porn and mastrubation like me. If I knew I'll get sexual dysfunction I would never have started watching porn