Jeremy Cheung, 18
Taking things for granted. I treat things like my bed, books and computer far too carelessly. Worse still, I take things like friendship and trust as guaranteed. I do and say stupid things that hurt, but thankfully have never destroyed, my relationships with people. I also occasionally get obsessed with collecting things - I'm going through a phase where I'm buying far too many shoes, to my parents' disgust.
Jason Lam, 17
Procrastination. All I do is procrastinate. I'm used to leaving work until the last minute. But this year, I'm trying to finish my work the day it's assigned. I hope this new attitude lasts.
Natasha Sarangi, 17
I have a bad habit of acting stupidly in front of the mirror when no one's around. But I guess lots of other people do the same thing. Come on, you know you do! I'm much happier with my life and myself than I ever have been, but I see my mistakes, sins and bad habits as threats to my happiness. I have more good days than bad, which is why I feel I've achieved my goal of being happy, but some bad habits make me feel miserable.