Take a moment to read this quote from William Gurnall, courtesy of Rev. Ray Ortlund.
Then think about God allowing Satan to bring the subconcious fears in our lives to the surface, not to torment us, but so that Christ can completely disarm Satan. So that there is nothing left for Satan to use against us because God has proved himself trustworthy, yet again.
True, fear is part of the human condition, but isn't it fun to look at it and think about it as a sign that we're winning? :)