问心无愧最重要

do something u wont regret ~

think and make the decision that you won't regret. we'll support u.

yes, but how to define right or wrong? there's always a grey area

there is no grey zone if u believe it ~

hmm....u need to look at other things in the equation - look at the point of view : "for the greater good ".
or when there is a grey area- follow the way you want it (like what Ah Shua says above)

but how to define good or bad? there's never be an exact answer, right?

different with different ppl.. u define your closest. the greater good

dont stop...believing ~

what a mother sees as good. is not what the child sees as good. Wat a friend sees as good is not the same as what you see. Follow urs. We can only advice. decision is yours.