Re: Help me find this episode.
Hope and fear is a good guess re: the ship... but not re: the EMH's part.
It could be he's recalling "Live Fast and Prosper" or combining the two.
In LFAP aliens impersonate Janeway/Tuvok and conn people out of their money. In the end the EMH impersonates one of the impersonators.
"But life is a battle: may we all be enabled to fight it well!" Charlotte Bronte