How do you deal with the temptation to contact your ex?

Block him on everything and try maybe try out for sports or join clubs so that it keeps you busy physically and mentally.

Why would you want to back to your past? From experience I know this is never a good choice. I think about why they are an EX in the first place.

Try to keep in mind the reasons that the relationship ended in the first place. People have a tendency to look back on the positive experiences they had with someone and to lose sight of the negative impacts that their past relationship caused. If you keep picking at the scab, you won't allow it to heal.

I think the best thing to do when you're thinking about contacting your ex is remembering why you guys split up in the first place. Like, you don't break up with someone when things are great. The relationship needs to be in a bad place, so ask yourself: which things lead to the break up? Remember those things. Remember that there's a reason why you're not together anymore, Distract yourself as well. You can definitely listen to some Taylor Swift songs while crying and eating cookies if it makes you feel better. Go ahead! Take your time. Distract yourself. Spend time with family, friends, do what makes you happy. You're your own individual person and the only person responsable for your hapiness is you.

Instead of thinking about your ex try to do something you like, maybe watch a film or just do your hobby.

I think it's best if you keep yourself involved in all sorts of activities. Keep your mind off of them and focus on yourself. When I had to deal with this temptation, I joined a drum class! (I still suck at the drums but it did help me enjoy and have some time to heal)

Delete every way of contacting them. Delete their number, their facebook contact, their instagram, twitter, everything. Do this so that if you have to contact them, you at least have a barrier of having to re-add them on social media before you actually make contact. It won't be a perfect stop, but it'll at least be a hindrance.

If the break up has been bitter then it is wise to not be in touch. Delete all the means of contact. Hmm and everytime you feel like contacting the person， write one reason why you broke up on a piece of paper. Keep a jar and add the paper to it. Keep doing it everytime that you feel tempted. When you will look at the jar filled up slowly， it will remind you of the multitude reasons you have to not contact him\her :). Even if at times， it is sooo hard to let go of someone you have loved...and shared beautiful moments with.

Basically you should get dispose of any contact you can possibly have with him: by phone, Internet and even personally. If you work with him/her at the same place and have duties to do, treat him only as friend and do the time you have to spend because of work, but then go back to work and do whatever you have to do to get rid of temptation.

Think of why not to contact them. If you keep telling yourself "I shouldn't contact my ex because of A but I miss them because of B." Try distracting yourself or spend time with some friends. Maybe binge watch a show you like!