We live in a society where what you look like, what you have, and who you associate yourself with are major factors in the expression of the individual self. Because of these three main "standards," people love to alter whatever it is to fit these platforms to "enhance" their overall state of being. What am I saying here? What you see isn't always what is real with a person.
Go on your Instagram, Snapchat or whatever social media platform people express themselves on. A lot of times, especially with Snapchat stories, you can see people adhering to these three standards.
An example I see a lot is that a person finally got invited to a party with the "popular people" but these people don't really even give a damn about the person.The next thing we see is the person's Snapchat stories of them at this party making it look like they are having the time of their lives but in reality, they are trying to fill this unrealistic goal of outward appearance from the insecure self.
Stop comparing yourself to people. Stop comparing yourself to your best friend, sibling, lab partner, sorority sister, etc. You were made the way YOU were for a reason and to constantly nag at yourself for not having x,y and z does nothing but bring you down. Sure, you want to maybe lose some weight to maintain a healthy lifestyle so you look for inspiration, but NEVER tell yourself or let yourself believe you are any less worthy than anyone else.
Comparison is the thief of joy, and just because you see an outward appearance of something, does not mean that it matches what happens on the inside. Once you stop worrying so much about meeting unrealistic standards set by society, you will find yourself happier, more productive, and most importantly, at peace.