Reality BITES!

This was a question a friend of mine asked me and a group of friends one Saturday evening. Two of them immediately answered the same thing -- they are not sure of anything. I never got to share my answer, but that question really got me thinking. I thought of all kinds of deeply profound lines, but found that the simplest answer was the truest one.

I am sure that the one person I can really depend on AT ALL TIMES, is myself.

What are YOU sure of?