Worry is nothing more than negative visualization. We can learn to substitute negative thinking for positive, and to put our energies toward creating success, instead of running away from failure. Anyone who is successful in sales in the long run makes a game out it, orthey end up out of the business before long. When your work life or business stops being fun, not only is it time to get out of it because life is too short to suffer that much, but you probably won't be very good at it, either. You can learn the art of being passionately committed to your work, but detached from rejection.
Success builds on success.
When I am coaching people who hire me to help them get unstuck, I always look for small, but significant ways to help them feel successful. The more you succeed, the more risks you take, and then the more you put yourself out there in the world, available for more successful opportunities to come your way. It's a positive cycle that builds with action steps, no matter how small. Stop searching for such a nirvana. I know this, for now, I want to do nothing else, and I am strongly motivated to make it work.