flying

I mentioned you and smiled. My friend laughed at me, then became serious and told me to be careful: "the higher you climb, the harder you fall."

I've never been the type who's afraid of heights. Should I be?
I am starting to get scared of something going wrong. It's almost too good to be true.
Just remembered how someone told me of a kind of bird that can fly higher than the others. If I told you which one, you would laugh...

...And now I'm smiling again.