Interview: mortal sins

"I learned from it--a lesson forever."

It's final. My UP dream is lost. It hurts. But what did the greatest damage is the financial burden my family will carry for the next 5 years. Let's summarize my short stint (application) at the UP:
1. GWA - not excellent
2. NMAT - excellent
3. Interview - terrible
a. I did not prepare for the interview! I was sure that it was inadequate.
b. I refused entertaining the idea of getting leakage of the interview questions from a batch mate. I know that this is not honorable so I did not ask for a copy. Even so, that could have greatly helped me prepare for the interview.
c. I was scheduled at 10 A.M. but the actual interview started at around 2 P.M. This could have affected my physiology and answers. I slept late the other night trying to prepare for questions which were rather general.
d. Some of my answers were inadequate, not from the heart.
i. I could not justify my reasons for being just a normal student as an undergraduate student. I was afraid of showing my weaknesses to them. I was tired of defending myself.
ii. I lied by saying that some situations never occurred to me. Things were just too personal for me to divulge the information they needed even if I understand that everything was part of the interview. It may also be a case that I was tired of speaking English and wanted to end things as soon as possible.
e. I insisted on speaking using English even if I could have expressed myself better with Tagalog. I did so even if in the start the interviewers told me that I could speak in Tagalog. ( I just had to have the guts to ask such favor from them.)
f. After the interview, they noted that I was too tense. This was a sign that during the interview, I already noticed that things were not going well. Bad body language is not supposed to be shown, but I guess I am not good at hiding it or pretending that I was comfortable with the interview.