Lewis Dunning says

What life means to us is determined not so much by what life brings to us as by the attitude we bring to life; not so much by what happens to us as by our reaction to what happens.

Winston Churchill says

If you have an important point to make, don't try to be subtle or clever. Use a pile driver. Hit the point once.Then come back and hit it again.Then hit it a third time — a tremendous whack.