self-confident crisis, maybe

How was your fourth of July break? Was it fun? This week my dad from Indonesia and uncle's family came over for vacation. It was fun that I got to see my little cousins again. All activities restricted my time, so I have not been creating stuff for a while. Although in this fun time my mind always struggle thinking about negative and destructive things. 

I am not sure if it is only me or it is just natural as a girl/woman to think about how their body and face are. As for me, I have been complaining to my family about how chubby I am and how I think my face is .. ugly. I feel bad talking to my dad about this matter, but I have always think that way (yes, even though I look at myself on the mirror pretty often). As I open facebook or twitter, I just envy how nice people look and grow up, I envy them. Not that I want to do something with my face, but I kind of feel suck. Does that happen to you also? How do you advise yourself or treat yourself when you face this kind of self confident crisis?