Ann,
I am so happy to hear from you. Are you a freshman? Please tell me why school is so hard right now. What sports do you participate in? Swimming? Sorry for all the questions...
Are you comfortable talking to your mom or dad?
I think your dream job is very attainable; try to see high school as challenging and not stressful. Meet with your teachers in the classes you find most challenging and request their help on how to succeed (pass) the class.

Most importantly, take care of yourself. Again, suicide is not the answer. Diana gave you some very good advice...please call.
Sincerely,
Laura