"흥미를 가져라"  


                    당신의 마음이 흥미를 잃으면
                    당신은 정력과 생명력을 잃게된다
                    당신의 마음의 흥미를 잃게되면 아무런 일을
                    하지 않았는데도 당신은 그만 지쳐 버리고 만다
                    당신은 결코 지쳐서는 안된다
                    그러니 뭔가 의미있는 일을 찾고 그 일에 흥미를 가져라
                    뭔가 의미있는 일에 철처히 몰두하라
                    그 일에 당신 자신을 남김없이 쏟아 부어라
                    당신 자신을 온전히 바쳐라

                            -노먼 빈센트 필의 '적극적 사고방식' 中-