Is there any special suggestions for studying math when you have family problems?

you should deal with your personal issues, or theyll damage your potential sucess.
keep trying, time heal all wounds.

Try doing your Studying in a quiet spot in the Library... THAT way Your "family problems" will seem far away, & you can Concentrate on what You're Doing...  

I think most young persons go through feelings like you've described. When I was your age, I would often find myself writing out my thoughts, and sometimes I wrote some very dark poems. It's a part of the growing process, and often it's painful mentally. Your life won't always be this way. If you can still make good grades, then that is what matters. If you make less than A's for a while, it doesn't mean that you haven't succeeded. Maybe what you're not seeing is that you good with writing as well as being good with math. I'm guessing that the writing side of you needs a release, just like the mathematically inclined side of you needs realized.