What to choose, what not to?

The world is not so as it appears
they say Earth and Sky never meet in real,
But Horizon is the place where it does appear
Earth and Sky really meet there!
A helmsman can steer the boat
But the river will play its role,
It will cut apart the land and make its course
It's a river, It's born to flow!
The question that needs an answer is,
'will it lead you to the shore?
Or to the doom?'
You will revolve around the Earth
Or the Earth revolves around you!
What to choose, what not to?
For they say Earth and Sky never meet in real
But Horizon is the place where it really does appear,
Earth and Sky finally meet there!