'Don't go chasing waterfalls, please stick to the rivers and lakes that you're used to......'
Is a chorus part to TLC's 'Waterfalls'.
Sounded a bit hard to understand but i think it means, don't aim for the sky when you are buried deep beneath the ground. Impossible is unattainable.
Don't day dream anymore, time to wake up XXX (if you feel that the statement fits you well, replace your name with the XXX and post it onto your Facebook status)