My cousin 1 ups me in everything?

A I really need help and advice how to not be so down about myself.
My cousin has 1 upped me in everything for years. And she gets everything she wants since her family is quite wealthy compared to my family. For example I wanted a computer when I was 13 and I told her about how much I wanted one and I hoped I was getting one for christmas and when christmas hit she got one. It has continued now she is 2 years younger than me. She's in now a senior in a private high school and I'm a freshman in community college. I know she's going to get into a better college and that depresses me. She's always had nice clothes, perfect teeth, and iphones and computers She can drive while I can't and she has her own car which I don't have. She has many friends while I have barely 2. Everything I have ever wanted. She's prettier and I don't feel I can succeeded at anything because i'm always put in her shadow and she's younger then me. I have always had messed up teeth and I've never felt pretty while smiling. My family can't afford braces which really sucks and I need a job but my mom won't let me get one till I finish school because I have to babysit my brother at all hours. My life is going no where. I feel ugly, and just an outcast from my family. I often hurt and mutilate myself because of this, I just don't feel like I can get anywhere or make anyone proud. I really need advice or motivation to do something about myself. I have no one to turn to.

How many gb of data do I need for my iPhone?

I'm about to buy an iPhone. I would use the talk and text often but I'm wondering about the Internet data. I know I'd use it when I'm on the bus and at other friends houses. I was wondering how many gb would I use with it on almost constantly and how much would it cost with Verizon wireless.

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One of my friends disabled my iPhone to the point where it says connect to iTunes. Now, is there any way to make it let me enter my password? I don't want to restore it, as I have a LOT data such as texts and others that I do not want to lose.
If this is not possible, why is it not letting me restore from a backup? When I try it says "Can't restore from backup because iPhone needs a password" or something like that. WTF? I can't enter my *** password, it won't let me. Do I really have to restore it COMPLETELY!

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Why doesn't my iphone's sleep/wake button not work?

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How to Backup My iPhone in a Way that Saves App Data?

So if I restore my iPhone from an iTunes backup, after I re download (if redownloading is necessary) such as, (for example) Angry Birds, I still have my game progress? I wonder this because I wish to unjailbreak my iPhone.