First of all, don't compare yourself to her, she is a different person from you. You are a unique individual. You have your own qualities which makes you as a person. Love yourself, stop trying to be perfect. Stop criticizing yourself for being less than perfect. Always do your best, but not reaching perfection is not failure. Do things that make you feel good about yourself, and remember that you both live different lives. Focus on making your life worthwhile so that you don't have to want the same things she does.We all have different gifts. When you compare yourself to others, it makes you feel bad about yourself. When you compare yourself to others for what they have, whether it is a car, a house, a mate, children, money, good height, a good physique or intelligence, or a job, it makes you feel low self esteem, lose your confidence, and perhaps depressed, envious or jealous.
A way to stop comparing yourself to others is by focusing on your own strength. Get to know yourself, and discover what your greatest gift is that you are meant to share with the world.
Another great way is by practicing gratitude. Be happy for what you have. Really be grateful about everything that you have; people in your life, job, relationships, material, etc. Gratitude keeps your heart open to love.In order to love yourself, you have to stop loving the person you wish you were and love the person you actually are instead. We can try and pretend to be someone that we're not, but in the end that only hurts us and the facade can't stay up forever. Just be the person that you are and learn to love yourself just like that.