How do you handle "not interested"

On a cold call, has anyone ever told you they're not interested?  What about in a retail setting?  If you're in retail, you're probably hearing "just looking."  It's basically the same thing.  And if you're not hearing this multiple times a day, it could be an indicator that you're not taking enough action. So, if you're hearing it everyday, how do you handle "not interested" when you hear it?  Because if you don't have a plan and a set response those two little words can stop you dead in your tracks. Why do you think so many people struggle with selling? FULL TEXT: https://cardonesolutions.com/how-do-you-handle-not-interested/