Nobody is perfect.  We all make mistakes.  Many people learn from their mistakes.  Some don’t.  For some reason many people try to be perfect and when they make a mistake they take it to heart.  This affects ones state of mind and can lower self esteem.  This is a shame as mistakes are part of our life experience.  So if you have made a mistake forgive yourself.  If someone has made a mistake and caused you to feel bad, take the high road and cut them some slack and forgive them.  You will be glad you did. This will help you and the other person live with love and peace, and that is not a mistake but a blessing.