"I think part of the reason why we hold on to something so tight is because we fear something so great won't happen twice." Sad thing is that holding on will also keep a greater thing from coming. Fear should never be a motivation.
Don't chase someone who won't chase after you. Don't give to someone who doesn't appreciate you. NEVER push a loyal person to the point they no longer care. It takes work to get a person to that point and once there . It's hard to repair the damage