Happiness is such a simple, unifying concept. We all want to be happy. We all want to die happy. But do we really know what happiness is? Do we really understand its complexity? Does 'pure joy' lie on the same continuum as a 'quiet satisfaction'? And does happiness lead us to live a fulfilling life? This book helps us to discriminate clearly between two fundamental types of happiness. It helps us to know ourselves better, and to make active choices towards a more fulfilling life. The central theme here is that the simple concept of plain "Happiness" is not enough. Instead, complete happiness is to be found by blending feelings of sensory pleasure with feelings of satisfaction through achievement. We learn to balance the excitable pleasure of the moment with the deeper satisfaction of achieving our established goals in life. If we can establish a healthy balance between Pleasure and Achievement for ourselves, then we learn to live a fulfilling life. And by applying the Pleasure/Achievement Principle to the lifestyle decisions that we make; we will learn to experience a far deeper sense of personal fulfilment in our lives.