Positive quotes convey special messages for everyone. Their messages are not letting past, challenges, failure hold you back from moving on in your life, not letting them sabotaging your achievements, or make you give up on your dream that you always want to pursue. So, I gathered the most inspirational and motivations quotes from the book 'How to Stop Worrying and to Start Living' by Dale Carnegie; he is the author of his famous book 'How to win friends and Influence people'. Hopefully these quotes will help you overcome all your challenges and start a new life as they did for many people.