A lackadaisical approach will produce lackadaisical results.

Assumptions can subsist on a foundation of quicksand.

Never fear to lose face by making a complete about turn.

Assumptions are simply guesswork in Sunday clothes.

Life is made up of chances to make choices, decisions of what you wish to do; the accumulated result of those choices is what you call your life.

Surprises can rain down upon what had seemed a normal situation.