Vapor and an Illusion

I read an interesting scripture found in Psalms the other day. It is found in Psalms 62:9, it says "men are only a vapor; exalted men, an illusion..." What does that mean?

I am reminded of James where he stated in chapter 4 verse 14 that our lives are a like a vapor that evaporates so quickly. Here is my take on this scripture.

Men and their power on this earth is short lived.
Men in positions of great power are nothing when compared to the King of Kings.
I have the tendency to fret when I think about who is deciding what on my behalf, then I remember it doesn't matter who lives at 1600 Pennsylvania Avenue, it matters who sits on the circle of the earth. His name is Jesus.