My parents favor my bro over me what can I do? I nvr get anything I want.?

Ok so I have a laptop and an I-touch. My mom let's my bro play on them whenever he wants because she made me make her an a count on it. So she let's my bro on and if I change hernpword or anything she will find it out somehow and she will let my brother go on. And then with my I-touch , I can lock it but she finds out my pword somehow and still let's my brother use it. When my brother wants something she atomatily gets it for him whereas I buy all my cloths and anything I need or want. I bought my I-touch and my laptop and all my cloths. Ok I know some of you people who are reading this are saying well u still have a nice place to live and food to eat blah blah blah, but yeah that's true bt if your sad all the time and nothing ever goes right then what's the difference?