As parents we feel we are responsible for our children but they make their own choices. Unfortunately your son made some very bad choices and he and the family and friends he leaves behind are affected horribly by that. When my BF died I had terrible guilt and said the serenity prayer repeatedly.

God grant me the serenity to accept the things I cannot change; courage to change the things I can; and wisdom to know the difference.

Living one day at a time; enjoying one moment at a time; accepting hardships as the pathway to peace.