While trying to build success on your own terms, comparing yourself to others can undermine your efforts. Don’t look at what other people have and think “oh they seem happy; that’s what I want too.” Someone else’s achievements should not be used as a measurement of your own success. First of all, looks can be deceiving. And secondly, you’re not them, you’re you.
Remember your values and review your personal and professional dreams and desires. You’re the one who has to live this life; make it the best you can.