This central tenet of the book emphasizes the power of our thoughts in shaping our reality. Nightingale argues that our dominant thoughts determine our actions and ultimately, our outcomes in life. By consciously choosing to focus on positive, goal-oriented thoughts, we can direct our energy towards achieving success and attracting the things we desire.

Nightingale stresses the importance of setting clear, specific goals as a roadmap for success. He encourages readers to identify their passions and aspirations, and then develop a detailed plan for achieving them. By setting goals and consistently working towards them, we provide ourselves with a sense of direction and purpose, fueling our motivation and increasing our likelihood of success.

This universal law, also known as the law of sowing and reaping, underpins Nightingale's entire philosophy. He reminds us that success is not a matter of luck or chance but rather a direct result of our actions and efforts. By consistently taking positive action towards our goals, we set in motion a chain of events that will ultimately lead to the desired outcome.