Jealousy!
A waste of energy and time.
You should never jealous people's success but see people's success as a challenge. Don't ever believe that anyone is better than you because they're successful than you. Don't believe because he has a job before you he's gonna own a house before you. Don't worry on what you have lost but focus on what you can win. Don't cry over a broken relationship because it was never met to be. Always pray even though you don't know what to tell God. Life is not just about money alone but living happily. Strive hard to be able to take care of your family and you. Don't be discouraged when you don't get what you planned for but see it as one of the ways to plan it better next time. I could go on and on.
Jealousy can make you hate yourself or hating your friend that is more successful than you. Jealousy can make you kill a soul. Jealousy will make you envy your enemy when you should be striving to be better. Avoid jealousy even when your heart is driving to it. Know what is JEALOUS and how to fight it.
This are why you should never jealous anyone success
If you don't jealous, you will be happy.
If you don't jealous, you will ask for help from your successful friends instead of hating.
If you don't jealous, you will have smiles written all over your face.
If you don't jealous, you will find God's blessings.
If you don't jealous, evil thoughts will be very far from you.
Thanks for the seasoned words of wisdom
Thank you @ayobami