you know there's one thing i've learnt throughout the whole of SOT days (and before - but it never got sinked in) is that:

even if you think you are very good at something (even crapping!), don't assume you're really good. because there bound to be people out there who outdo you hands down!

it's really good not to think of yourself as someone who knows it all, because at the end of the day, when your brain is cluttered with self-ego, you can't learn anything.

but when you think that you are not good enough, you will be open to learn so many new things and accept so many new teachings. =)

you can a jack of all trades, but then, you are also a master of none.