Stop comparing yourself. Don't get so caught up in the misconception of "perfection" and don't wish your life away waiting for something to change. You don't want to be like that girl, why? Because you're you and you're even better. She's wishing she was someone else, and someone else is wishing they were you. No one is happy in their own skin. But you can't change it, so instead of trying and beating yourself up when you can't, just learn to love yourself instead. Your flaws are what makes you, you. No one wants a photoshopped version of you with a perfect personality. What is a perfect personality? Your quirks and awkwardness and smiles and successes and fails are what makes you an individual. Isn't the world beautiful with everyone of us so different from the last? Don't become a prototype. You do you.