Damn...A year sure is fast...

It's my second semester here in UPM, and it has come near the end of it...I wonder why I have this feeling of regret. Regretting of the time passing by so fast? Regretting how I didn't do good enough? Why am I still not satisfied? Come to think of it, I keep on flash backing on my past memories on how hard I did to get into the university, sacrificing a whole year and half working to earn money to enter. What should I do to ease this confusion in my head...