The more jealousy one has in his nature the more critical he is of those who have accomplished things.
If you are critical and mouthing negativisms it could be that your own failures are caused by a mixed-up, hate-filled mind. A sign of mental health is to be glad when others achieve, and to rejoice with them. Never compare yourself or your achievements with others, but make your comparisons only with yourself. Maintain a constant competition with yourself This will force you to attain higher standards and achievements. do not defeat yourself by holding spiteful or jealous thoughts. Think straight, with love, hope and optimism and you will attain victory in life.
Norman Vincent Peale