'Cotton kills.'
This is less important down here, where cotton is often quite comfortable, but important to keep in mind when things get cold.

"The easiest way to survive a disaster is to avoid the disaster.'
Don't concentrate on dealing with situation and neglect to look at ways you might avoid it.

'Don't play the hero.'
The need for 'heroic action' means you have screwed up and failed to plan, prepare or observe.