Checkout the wikipedia entry here: Decidophobia
There's essentially no cure, but a common solution would be a "dilution" of authority via consensus or communal decision making. We tend to call it "The Management Committee"
Being a manager has a strange way of changing your behavior. It's sorta like growing old, the more years you gain, the smaller your balls get. You're crankier but at the same time mellower, slowing down & less concerned with whats happening.