3. Love and success aren't non-renewable resources. Someone else's successes don't take away from your own.
This belief first appears for most people in elementary school: We see that some people are popular, and some people aren't. Some people can be happy; some can't. Often, this is where the lifelong competition that only ever exists in our heads begins. Someone else's success doesn't make you less successful. If someone else receives love or praise, that doesn't mean you aren't love- or praise-worthy. You are not only as good as you are better than someone else.