Promoting success among your peers will lead to even greater success for them and yourself. Whether it's academics, athletics, the workplace, or within your hobbies, you should always support others and their success.
Promoting success will give you opportunities down the road. It will help you network and form relationships that can be useful in the future. That person you congratulated for their success may come back to you and ask you to help them out with a new project.
Surround yourself with people who will uplift you rather than the ones who will become jealous of your accomplishments. Not only should you surround yourself with those people, but you should also be that person to uplift others. Be the person you would want to have as someone to support you.
Think of it this way: there is a kid playing with a toy. He's content and enjoying every moment. Another kid realizes how content they are and how much they're enjoying their time. This kid will take the toy, but they're not after the toy itself. They're after the feeling the toy gave the other child. They're jealous of the kid who seems to be having more fun than they are.
Observe kids. Their innocence and pureness will teach us life lessons we will cherish forever. Don't steal the thunder of someone else because you're jealous of their accomplishments, feelings, joy, etc.
Seeing someone else succeed should give us the motivation to be better. There is a difference between motivation to be better and motivation to be better than them. It's not a competition. Everyone's success is different. Someone who quit smoking may value that more than someone who graduated with a 4.0 GPA. The theme remains steady, though; they accomplished a goal and succeeded.
Joy comes with success. The safest way to find joy is with others while supporting and giving value to others.
Dealing with people who are envious of your success can often put you at a plateau. Don't give them any type of satisfaction. Now, that is much easier said than done. The most important thing is to never develop true hate for them in your heart. That will only enable them more.
Many times, it can be the people you're closest to that are envious. Face them head-on without being highly confrontational and rude. Tell them how you're feeling. They may not realize that what they're saying about you and your success is offensive to you. Talk to them and get to the root of the issue. Find out if you did something that triggered them. Did you offend them by not including them?
Make a connection with them. Show them empathy and that you care about your friendship with them. They will eventually realize there isn't a point to be jealous.
Ultimately, be yourself and be positive. Dwelling on someone who is jealous of you will only demotivate you. Do what you love without care of what others think about it.