How we feel dictates what opportunities we will see around us

As you work to free up your mind and give it the power to alter its perspective, remember the following: the emotions we experience at any time have an inordinate influence on how we perceive the world. 

If we feel afraid, we tend to see more of the potential dangers in some action. If we feel particularly bold, we tend to ignore the potential risks. What you must do then is not only alter your mental perspective, but reverse your emotional one as well. For instance, if you are experiencing a lot of resistance and setbacks in your work, try to see this as in fact something that is quite positive and productive. These difficulties will make you tougher and more aware of the flaws you need to correct. In physical exercise, resistance is a way to make the body stronger, and it is the same with the mind. Play a similar reversal on good fortune—seeing the potential dangers of becoming soft, addicted to attention, and so forth. These reversals will free up the imagination to see more possibilities, which will affect what you do. If you see setbacks as opportunities, you are more likely to make that a reality.

Mastery by Robert Greene