The second, because I am already scared of heights so I am used to it.

Well... Maybe I am not scared of heights alone, but I surely afraid of falling down when I am in some elevated place. I guess it is all the same anyway.
WYR travel in time into past or future?
Pessimist sees a dark tunnel. Optimist sees a light in the tunnel. Realist sees the light of coming train. And a driver sees three idiots standing on the track.
"My heart has joined the thousand, for my friend stopped running today." - Watership Down by Richard Adams.