well... nobody of us knows when will die. it can be tomorrow... or today... who knows? so... instead searching for a meaning of life, try to realize the thing youre doing right now can be your last act on this earth. So, there is not much time left for thoughts... if this were your last act on the earth, would you like waste it? or would you run to do some thing worth of the effort?

"Death is our eternal companion. Its always to our left, at an arm's length."
Don Juan Matus - Journey to Ixtlan by Carlos Castaneda.

If anyone could read this book, do it! its great! have many good points about nature of life, death, reality and this things.