Staying "high and dry" in a recession might be a metaphor referring to a flood.
To be "high and dry" may mean to be preserved from the bad effects of an economic recession - as the animals were protected high and dry in Noah's Arc.
The economic adviser is offering advice of preserving one's financial assets in time
of recession so that one rides out the storm. In time of flood it is life saving to
find a high and dry position.