Undecided Question

How to balance my life?

Okay. I feel overwhelmed. I'm 14. I'm going through puberty, have depression, ocd, am on medication, mom might have cancer, dad has bad arthiritis.Family problems.And I have a past. Now the normal stuff. Things I need to sort out to make my life easier. And I need help.

I don't want to go to a counselor, and i already have a therapist..who i don't think i like. Anyway,

School : I have a F in math and I'm in 8th grade. I need to get into a good high school. And it seems all my other grades are going down the drain, too. A's are B's, B's are C's. And of course there's that F. I want to know how to maintain a 4.0 average. And raise my F to a A.within a marking period. So for that I request for some good study techniques, and some nice links to websites that will help me understand math. And Science. I have a 90% but im not okay with that. It's not up to my standards.And no I won't lower them either.

beauty: I'm insecure. My friends compliment my beauty, and so do random people, but I honestly dont believe them because i've been put down [and AM being put down by my parents] all my life. You see, I used to be an outcast. That kid everyone hated for no reason. Thought was "uncool". And was made fun of and bullied. And then there's my parents. :/
Anyway, can you give me tips on how I can get lustrous and thick hair, fuller lips, and brighter looking eyes? And nice skin?

Fitness: I want to be able to get an A on my runs in PE. And for that I need to be healthy. So good foods/ bad foods? And everyday exercise? Help me please? And how can I relax my mind? ?

After this, I will feel much calmer and happier. Thank you SO MUCH to those who answer. I'm really grateful. And you really deserve a lot more than a mere 10 points.