The thing that gave me the most pain in life, psychologically, and it gave me tremendous pain psychologically, is man's disrespect for nature.
We kill at every step, not only in wars, riots and executions. We kill when we close our eyes to poverty, suffering and shame.In the same way all disrespect for life, all hard-heartedness,all indifference, all contempt is nothing else than killing.
Throughout life people will make you mad, disrespect you and treat you bad. Let God deal with the things they do, cause hate in your heart will consume you too.
Don't compare your life to others. You have no idea what they have been through.