Death is not a tragedy to the one who dies; to have wasted the life before that death, that is the tragedy.
No one likes having offended another person; hence everyone feels so much better if the other person doesn't show he's been offended. Nobody likes being confronted by a wounded spaniel. Remember that. It is much easier patiently -- and tolerantly -- to avoid the person you have injured than to approach him as a friend. You need courage for that.