I screw up my interview today

I screw up my interview today.
I was very excited and I should say, "confident" at first when I stepped into the room,
but then a series of challenging questions arose, my past experience in Australia,
my poor academics results in the last two years, all of them seemed to be pulling my legs,
especially because recently I have been keeping contact with nice and friendly people who are welcoming, through CS or at school,
but seldom do I encounter such an disrespectful person,
who uses their former discussion as a getaway for my burst of emotions.
So that is life? That is what you get when you are being labelled as students with mental problems?
I do have a lot of problems or traumas in my life, but do you really think I am in full control of all that? Even if you as an adult experience that, you reckon you have the control of all that? Huh?
I don't want to complain but you are definitely stepping on my face.

All those friendly suggestion did not help anymore.
I have learnt not to be trapped within a power struggle, again.
Whether I can stay with my "diminished" dignity ..
somehow I think it is not important anymore.
If I am really determined to take a break and reflect on my OWN life,
no one can stop me, even my mum.
But first of all, I have to PROVE YOU ARE ALL WRONG.
I have unlimited potentials in learning what I am interested in, all I have to do is to unleash it by changing my mentality a little bit, and with the help of a supportive network.
But if change is necessary, NOW is the best time.
And if you have the big and clear goal in your life, you do CARE,
and everything will come naturally.
I can do it!