{"product_id":"the-master-key-system","title":"The Master Key System","description":"\u003cp\u003eOriginally published as a 24-week correspondence course in 1912, Charles Haanel's \u003cem\u003eThe Master Key System\u003c\/em\u003e presents a complete, step-by-step program for achieving the success you most desire — through the precise application of thought and mental law.\u003c\/p\u003e\n\u003cp\u003eThis work is rumored to be what inspired Bill Gates to leave Harvard and start Microsoft, and was one of the primary inspirations behind the bestseller \u003cem\u003eThe Secret\u003c\/em\u003e. By 1933, it had sold over 200,000 copies worldwide. Today, it remains one of the most influential personal development texts ever written.\u003c\/p\u003e\n\u003cp\u003eUsing precise logic and a consistent framework, Haanel shows you how to feel healthy, think clearly, and attract wealth — not through wishful thinking, but through a systematic training of the mind across 24 progressive lessons.\u003c\/p\u003e","brand":"Nightingale-Conant","offers":[{"title":"Default Title","offer_id":52184424055096,"sku":"28950DP","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/2286\/4952\/files\/file_25381f81-d11f-45e1-8a39-4818b64cf43e.jpg?v=1776100920","url":"https:\/\/www.nightingale.com\/products\/the-master-key-system","provider":"Nightingale-Conant","version":"1.0","type":"link"}