When I first started in business, I was as green as they get. Though I went through all kinds of training, licensing and study, it was a long while before I actually made a sales call.
At last, my supervisor said I was ready and then added, "Now, you're going to get bloody!"
He was right, but I persisted. There were legions of people who didn't want to buy from me, but I kept going.
Around that time, I found the paperweight above. I thought it was great, and it helped me keep my perspective. I still have it, but you'll have to google it for a translation.
One day, when I received a particularly harsh no, I adopted this powerful quote from Les Brown, "I'm not going to let them, or anybody else, determine my level of success."
Don't let anybody or anything keep you from fulfilling your dreams.
What do you want? Persist, and you will find it.