Reminds me of Milt Thompson's (X-15/HL10/etc test pilot) story about crash landing a crop duster in mexico because of an engine stall and shearing an engine mount. His boss tells him it'll be fine and to fly it back to base in Texas, and being a dumb youngster, he does.
On his flight back, he starts thinking about the engine stall and decides to get some altitude so he can maneuver to a safe landing if the engine quits again.
After a little while, he starts thinking about the sheared engine mount and imagines the engine seperating from the aircraft and the plane becoming completely uncontrollable, so he drops down to low alt so he'd have a chance of survivng a ditch.
After a while, he starts thinking of the stall again, and so for the next hour, he's alternating between altitude and hugging the ground as each fear overpowers the other for a few minutes.
After he lands safely, someone else at the field asks him why he came in under the powerlines at the end of the runway, and he decides it would just be too complicated to explain.