1. Obstacles are opportunities Marcus mastered the art of turning every obstacle into an opportunity. Nothing was universally negative in his mind. In this vein, every hardship has at least one positive aspect. 2. Don't spend time worrying about what people think of you "Your energy and time are both limited, so don't waste them on what those inconsequential to your life are doing thinking and saying." 3. Focus on the present "Each of us lives only now, this brief instant. The rest has been lived already, or it impossible to see." 4. You are the architect of your perceptions "You have the power over your mind -- not outside events. Realize this and you will find strength." 5. Value the right things in life and your life will have value “A person’s worth is measured by the worth of what he values.” 6. No goal is out of reach “Because a thing seems difficult for you, do not think it impossible for anyone to accomplish.” 7. Be grateful for what you h...