You never know how successful and lasting your relationship will be. Sometimes even wonderful couples break up. The period after you part with your significant one can be really painful.
Unless you accept it’s all over will you not be able to start your new life. Quit mourning and complaining. Do not blame yourself or your ex-partner for what has happened. Breakups do happen very often and you are not the only person who is going through this sort of unpleasant experience. The end of your current relationship may mean that you are about to enter a new stage of your life full of happiness and joy. Admit that you are strong enough to cope with this sort of unpleasant situation.