Those who succeed were—at one point or another in their lives—willing to put themselves in situations that were uncomfortable, whereas the unsuccessful seek comfort from all their decisions. The most important things I have done in my life were not the things I was comfortable doing; in fact, many of them made me very uneasy. Whether it was moving to a new city, cold calling a client, meeting new people, doing a new presentation, or venturing into new sectors, most of it was uncomfortable for me until I got used to doing it. It is so tempting to become content with your surroundings, daily rituals, and habits—most of which are probably not furthering your mission. It feels good when things are familiar.
However, successful people are willing to put themselves in new and unfamiliar situations. That doesn\’t mean that they are always changing just for the sake of changing; however, they know that getting too comfortable, too relaxed, and too familiar causes a person to become soft and lose his or her creativity and hunger to stay out front. So be willing to be uncomfortable, and do what makes other people uncomfortable as well. It is a sure sign that you\’re on your way to success.
Grant Cardone. “The 10X Rule.”