The document discusses the concept of an iceberg, where only 10% of an iceberg is visible above the sea level, while 90% remains below the surface, invisible. This phenomenon is also applicable to humans, where only a small portion of one's knowledge, skills, and behavior are visible to others, while a larger portion including attitudes, values, motives, and beliefs remain unseen below the surface. The document also discusses the importance of skills, knowledge, hard work, and having a positive attitude in achieving success and happiness in life.