How do I find contentment as well as opportunity?

I know that this may seem like a very vague question but I will begin by getting more specific. I live in a city called Stockton and it's the most miserable place in California (Its actually be labeled that) and all I want is to escape and do amazing things. I want to go everywhere and do anything but I'm trapped. I never get to do anything because I'm a teenager and completely dependent on my parents. Anyway, my parents are going on vacation to Southern California (we used to live there when I was younger). They're leaving me and my brother behind and I feel so cheated. I haven't been on vacation for years, not even a trip out of town. Nothing. It's not at all like I don't think my parents deserve it but I feel like I deserve to go somewhere. It's not easy living in a place where there is just nothing. I feel so bad about it, I know I should be so thankful for everything that is good but as the days draw closer to their trip I feel worse and worse. What do I do?