Well my Dad drinks,my aunt has some mental problems,my dad to.
OK Milos, I understand your concern now, but what do you think could show that in your own chart? That is what we are after here, we would like you to say something like:
"Well, my Mercury is in Pisces and squares Uranus and Moon, so maybe that could make me mental???".
If you ask a question Milos, then that question can come from the fact that mental illness is in your family, but you must also study your natal chart and see if there is anything you see that disturbs you.
I have mental illness in my family, but I am normal.
My brother is manic depressive, my sister is paranoide schisophrenic (dont know if I wrote this right) and another sister borders on being a religious fanatic. So when I want to know if I am prone to mental illness, I look at my natal chart and at the things AstroTeacher mentioned, Moon and Mercury and I am
not saying to myself: oh boy, 3 of my brothers and sisters are mentally ill, so I must also be ill.
Now those squares do make you emotionally tense and maybe a bit unstable, but probably only occasionally or when triggered by a transit. You must be careful with drugs and alcohol though, because of the opposition of Moon in 12 to Neptune in the 6th, so stay away from those if you can. You have seen what it did to your father and this is about the only time I would not like to see someone follow in the footsteps of his father!!