Teen –
You feel this way, becuase you are only “seeing” the glamorous side of other people’s lives.
Once you see how things really are, you’ll realize how truly blessed you are, and how good your life / situation is.
I could pick apart each of the “concerns” you listed, but trust me on this one. The life you get is THE BEST ONE FOR YOU. No one gets to intrude on another’s share of happiness. You just need to pray to have the insight to see your share for all it truly is.