Staying positive
It is very easy for caution to turn into a hindrance, preventing us from acting. While it is important to keep one's guard up, to be aware of risks and dangers, one should not be pre-occupied with that. The best way to avoid getting hit is to keep your opponent on the defensive. You will also realise that you have an unhealthy pre-occupation with negative aspects if your fears and concerns prevent you from having a happy and fulfilling life and career.