Generosity of spirit has to do with forgiveness, compassion, going the extra mile, the bigger picture, etc.  You know that people are imperfect, as are you.  So, people screw up, as do you.  Therefore, what you have to do is demonstrate generosity of spirit that is the extra mile, forgiveness, caring, empathetic dimension of yourself.  In order to do that means you go the extra mile, you reach out, say “Thank you.”  You say “I’m sorry.” You forgive and you let it go and you move ahead.  You let go of the stuff that’s irreconcilable so that you can get on with your life.  Show that generosity of spirit and you will see results.