Richmond Dinh on jealousy as a signal of someone's insecurity. He explains Tall Poppy syndrome, where people cut down those who stand out, and says to focus on the ones inspired by your success, not the critics.
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Jealousy is a sign that you have something you need to work on. The equal side to that is, when someone else is jealous of you, it means they have something they need to work on. So why is this important to understand is because quite often we sell ourselves short when it comes to becoming successful because of this thing called the Tall Poppy syndrome. Or some maybe think you're all snobby and you're like, oh, look at me, look at me, look at me. Without realizing that for every person that's jealous of your success, there's equally other people out there who are inspired of your success and want to become like you. Focus on the people who want to become like you and inspired by your success, and do not let those that are jealous of you bring you down, because it's their problem, not yours.