Hey darling,
It's great you are trying to call for help, even over the net. It's a step. Don't underestimate yourself. Even if some people don't take you seriously it doesn't mean you are not serious and your problems are not serious. Usually it's the main mistake... people don't take seriously some of the teens problems so it leads to violence and drugs and stuff like that... Don't let it happen to you.
Having a supportive wealthy family doesn't really make a person happy. You have some problems and find it difficult to share them with people around you.
What about friends? What about the rest of your family? How do you get along with them?
Often having troubles in social life can make a person depressed even if one have a great family.
Why are you afraid of talking to people? Are you afraid they won't take you seriously? Are you afraid they would think you are crazy?
Are you complete with what YOU think about yourself?
About the suicide... I have tried to kill myself at the age of 13 too... life was just too hard for me then... as a matter of fact, it gets easier only when you ask for help and actually help YOURSELF... you need to do the most part of the work, people are just supporters. That's the way it works. You need to find the right supporters, you need to work on your self esteem... on helping yourself getting out of depression (I read your post too... you need to find help.)
It is scary and difficult to ask for help, you've done it here, now try to make a step forward and ask for help in real life as well... maybe start asking over a hotline and than going to a professional.
I hope everything would turn ok for you.
Hope to help.
Best wishes,
Kathy.