Maybe it will be a little pain, it doesn't matter. Why? You know what is important to you and know clearly what you are going to do. So, once you feel it just try to close your mouth and ears.
Trying to keep away the situation which makes you waste too much time to think about it and disturb your life step.
It is a great way to recognize yourself. Don't put it into you life again. Just do it that you really enjoy it and feel the happiness.
So, keeping move on and never turning back to the situation which had lost it.