examination

today i had taken my professional exam which is the most important and difficult in my postgraduate age. most of my classmates don't think they will pass this exam, but i turst i will pass it with my best.
now i am very confused about my future. i want to take the doctor degree ,but i am 26 years old , if i become doctor postgraduate ,i should live by myself, i should take care of my family.
so if so ,it is very hard for me to do it.
i am depressd and sad now.