Ah, the comparison game. You're not alone. Even "miss perfect body" (MPB) is looking at other women and wishing she had x. Two Miss Perfect Bodies will look at each other with envy. It is human nature to crave what you don't have. There are people here on this site no doubt looking at your picture and saying wistfully "if only...sigh...".
We all deal with this, and women most of all because of all the unrealistic and contradictory beauty standards in the media.
It's in the mindset where peace and satisfaction are found. If we start by focusing on our strengths, enjoying them, and looking for evidence that supports this (rather than evidence of our inadequacy), we will slowly build a self-confidence that lasts.
Happiness comes from within, whether or not you are in the MPB club or not. If you asked them, you'd find much the same issues with them as well.
I'm sorry your day was so overwhelming. That happens sometimes. Regroup, ground, and begin again, no judgements, no guilt, no shame. It's all good, and you've got this.
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