Jealousy implies that you are not sure of your own worth, ability, power.

You find someone else is being appreciated, you _covet_ that appreciation for yourself, whether you deserve it or not.
In other words you yield to accursed selfishness, utterly forgetful of the apostolic injunction: "In honor preferring one another." And the same jealousies are found among men and women in every walk of life, in trade, in the office, among professors in schools, colleges, universities; in the learned professions, among lawyers, physicians and even among the ministers of the gospel, and judges upon the bench.
Oh! shame! shame! upon the littleness, the meanness, the paltriness of such jealousies; of the worries that come from them.

How any human being is to be pitied whose mortal mind is corroded with the biting acid of jealous worry.

When I see those who are full of worry because yielding to this demon of jealousy I am almost inclined to believe in the old-time Presbyterian doctrine of "total depravity." Whenever, where-ever, you find yourself feeling jealous, take yourself by the throat (figuratively), and strangle the feeling, then go and frankly congratulate the person of whom you are jealous upon some good you can truthfully say you see in him; spread his praises abroad; seek to do him honor.

Thus by active work against your own paltry emotion you will soon overcome it and be free from its damning and damnable worries.
Akin to the worries of jealousy are the worries of hate.