Getting divorced or breaking up with someone you were in a relationship with can cause a lot of emotional grief. The key to getting better is understanding broken relationship grief and how to deal with it. Just like losing a loved one to death, the grief at loosing a partner by way of a break up can be almost as overwhelming for some.
Even if you are the one that wanted out of this relationship you are going to feel some emotional stress whether you admit it or not. It's how you handle this that will determine your mental well being. Some people feel that going right into another relationship as soon as possible will help make the pain go away, this is not how it works.
There is some rule of thumb that I saw somewhere that says you should take off six months for every five years of being in a relationship. You can adjust that based on your situation. The idea is to give yourself enough time to recover from the last and clear your mind. If you are still grieving from your last relationship how can you function in your new one.
When issues from the last relationship are still clinging to you, you may find yourself with another person that may be like the last. This may not be good if your last partner was not compatible with you. You would be starting your cycle all over again and it would put you back where you started.
Take the time off to clear your mind and enjoy your life, spend time with family and friends and do things to energize you and make you happy. These will help prepare you for meeting someone that may be right for you and make your life the way you had hoped.