What's the word I'm thinking of? Today, it's....
Someone who hesitates because of fear or doubt
"You have been a boggler ever:
But when we in our viciousness grow hard—
O misery on't !—the wise gods seel our eyes;
In our own filth drop our clear judgments; make us
Adore our errors; laugh at's, while we strut
To our confusion."
--William Shakespeare, Antony and Cleopatra, Act III, scene 13
To be or not to be? Isn't that the question, Will?