Amour-propre is a French word that means "self-love" or "self-esteem". It's like how you feel about yourself - if you think you're great or if you don't like yourself very much.
Amour-propre is different from just feeling good about things you accomplishing or things in the world. It's about how you feel about yourself - whether you think you're a good person, whether you think other people like you, whether you're proud of who you are.
Some people have really high amour-propre and think they're the best thing ever, while some people have really low amour-propre and don't think very highly of themselves.
It's important to have a healthy amount of amour-propre. If you have too much, you might become really selfish and hurt other people. If you have too little, you might not try new things or take care of yourself.
So, amour-propre is like a way to think about how you feel about yourself and making sure you have just the right amount of love for yourself!