What should my risk appetite be?

I always hear about risk appetite, but I am not sure how to work out mine, or what it should be. I am 32 years old, have retirement savings, but could save a little more, am paying off my home, and have a comfortable job. Should I be taking more risk, with the possibility of earning higher returns, such as getting more equity exposure because of my investment time horizon, or should I be mixing my assets more conservatively to allow for steady growth? I have about R3 000 a month to invest. Anonymous