Plan may fail, life goes on.

Life is more than just chess.
Though king dies, life goes on.

I once visited a village of primitive people.
At village, I felt time and life moved slower.

No one knows for sure about the future. But if you feel reluctant to plan something about it, then someone with guts would define it for you.

Mental strength induces mind and body.

Let us think for a moment about alien, regarding possibility of the existence of other civilization beyond our dear planet earth. We probably conclude that it's all just hoax, or some rumors issued by ruling government for some purpose. Now, we can contemplate a bit about it by asking this simple rhetorical question, 'How could possibly people be able to think about something unknown, which have never been popped out in human minds at all?'