How do you deal with rejection?

[Max69]

How do you deal with rejection? I'd be pleased to hear your stories from all kinds of perspectives. Have you ever experienced rejection from clients and how do you deal with it? Does this happen often, and if I may asky, why? Do you find that if you like someone more, like an instant connection, the service is better or is it the same for everyone? 

I'd love to hear from customer side as well, have you ever sent a sw home, and if so, why? How did she react? 

I'm very much curious about your answers and stories.