A single question can be more influential than a thousand statements.

Bo Bennett

Don’t worry about failures, worry about the chances you miss when you don’t even try.

Jack Canfield

There are two primary choices in life: to accept conditions as they exist, or accept the responsibility for changing them.

Denis Waitley

Handboek verandermanagement
Theorieën en strategieën voor organisatieverandering
Anton Cozijnsen, Willem J. Vrakking

Bij Managementboek.nl | Bol.com

Gelukkig zijn kun je leren
Martin E.P. Seligman

Bij managementboek | Bol.com

If you're not occasionally failing, you're not trying hard enough.

Arthur Sulzberger Jr

The measure of success isn't if you have a tough problem, but whether it's the same one you had last year.

John Fulles Dulles

The most likely way to reach a goal is to aim not at that goal but at some more ambitious goal beyond it.

Arnold Toynbee

The winners in life think constantly in terms of I can, I will, and I am. Losers, on the other hand, concentrate their waking thoughts on what they should have or would have done, or what they can't do.

Denis Waitley