I have noticed also that this fear can help you reduce lose sometimes when you fear to pull in your trade then you stay back and at the end the market would have gone against you. It means that the fear actually was to your advantage because you didn't enter an order.
We have the fear operating in both advantage or disadvantage to your trade.
Honestly I don't think I'm getting you well on this but let me say this fear can be found everywhere especially when you decide to take up some risks, moreso when people tend to go into some something fear of loosing is what makes them withdraw themselves which can be a disadvantage on one end, then in the other hand I think waiting is required in trading and it proves the positivity of the outcome, thereby making it an advantage.