"PSYCHOLOGY / Applied Psychology" . . "SELF-HELP / Personal Growth / Happiness" . . . . . . . . "Electronic books" . . . . . . "Legions of self-help authors rightly urge personal development as the key to happiness, but they typically fail to focus on its most important objective: hardiness. Though that which doesn't kill us can make us stronger, as Nietzsche tells us, few authors today offer any insight into just how to springboard from adversity to strength." . . . . . . . "The undefeated mind : on the science of constructing an indestructible self" . . . "SELF-HELP / Personal Growth / General" . . "SELF-HELP / Personal Growth / Success" . .