Let things go that you can never change. Let the sunshine in and have a happy life.
We are all so different from one another. For some adjusting to changes and letting go as well as accepting rejection is almost impossible to do. Coping skills, detachment skills, self love are things to learn. Not every one can afford mental / behavioral health care, people just live hidden sad lives. Very sad when it happens to people you love. ~ Lea Gabbard
Grudges are a waste of perfect happiness 
Little chance you have in trying to change others 
It’s better to walk alone 
How your life can change?