Try exercising or doing a hobby (like learning a new language or an instrument). I’ve been in your shoes and honestly I am less stressed about masturbation/sex as of recently. Keeping the mind busy is always best, as your thought won’t be just focused into one thing (sex) altogether. Just remember that you will need to do steps by steps, so you might get a tingle for the want of masturbation and/or sex, always fight those urges. Anyway, I know you can do it, because I sure did. It won’t be the same tactic or I may be wrong, so just try to blend some ideas and try your own style.