Exposing yourself to anything is one of the best ways to become immune to it. A micro-exposure strategy is essential for exposing yourself to a stressor, as therapists use micro-exposures to combat phobias. 

However, you can use micro exposure as a strategy in door-knocking to get comfortable with basing rejections at the door, which will help you win in your game.

How Micro-Exposure works?

Here's how micro exposures work. It is similar to how hikers at high altitudes gradually ascend. They ascend a short section. Then they pause as they can't reach the top with a direct sprint. 

If they did this, they'd suffer seriously and need to retreat step by step. Their body must adjust slowly to the high altitude, but they break through the altitude barrier. It isn't a barrier at all. They just needed to adjust to it gradually. It didn't hold them back from ascending the mountain and reaching the peak. 

You can treat facing uncomfortable situations and real estate the same way. Just as hikers gradually reach the top, breathing freely. You will become strong and unaffected when facing a no; what used to be very uncomfortable eventually becomes another door on your way to achieving your goal. The bottom line is that your exposure can build up your natural immunity and strength.