Persistence       Children may not know the meaning of the word persistent, but they have the concept down pat.     "Can I have a snack?"     "No."     "Can I have a snack?"     "No."     "Can I have a snack?"     "No."     This is a typical conversation with one of the little people I babysit, only the conversation lasts a lot longer. I don't have a problem with snacks, but I do limit them to no more than 20 per day. She'd like more. She's persistent.     As a child, I was persistent. Not for snacks, but for salvation. Every night I would pray and ask Jesus to come into my heart. I was afraid that maybe I didn't do it right or something. God was more than willing to listen to the persistent please of a child.     Now, as a writer, persistence is key in my life. I have to send out a lot of articles and stories if I want to receive paychecks. You know that old adage, "If at first you don't succeed, ...