1. Focus on their flaws. While this may not be nice as far as being a person goes, it will help you stop mourning their loss. Sometimes absence makes the heart grow fonder, and it makes you forget the little annoying traits that drove you so crazy when you were with them. Remember those things, and you won't have such fond feelings. If you are really struggling to move on, and forget your ex, then make a physical list, and review it regularly so that you they stay fresh in your mind. You can still love the person as a human, but recall the numerous reasons not to be with them. If you are struggling to come up with things, ask your friends, they are sure to have a few ideas for you.

2. Exercise some mind control. I am not talking about jedi mind tricks kind of mind control, I am talking about the idea that no one can control your thoughts but you, and if you want to stop thinking about your ex, you can. When your mind wanders to your ex, and you start to get in the pity me mode, it is time to immediately change the direction of your thoughts. You can control that, so push your ex out of your mind, and think of something else, or clear your mind completely. Think of it like a valve that you can shut off to stop the flow of thoughts.

3. Find something or someone new to take up the thought space in your head. While the mind is expansive you can only do so much in a day, so if you do not want to think about your ex, and that is where your mind goes when it is idle, then find something to excite your passions, and fill your mind. It can be a new exciting hobby, or a new exciting person. Often the best remedy for getting an ex out of your head is to get a new boyfriend or girlfriend into your head. Or, focus on your job, and make a goal to get promoted. The idea here is to do whatever it takes to make something else your focus, and slowly, but surely, the memories and thoughts of your ex will fade, and you will find peace.

If you do these three things, it will be much easier to forget them, and move forward with your life and other relationships in a healthy way. You cause any thought or obsession, or unhealthy emotion. If you cause it, you can stop it. So, do so!