These two parables come with their points explicitly stated. The first is so that you wold pray always and NEVER give up. The second teaches that you can't be puffed up in prayer because the proud will be humbled and the humbled exalted. Taken together they tell me that if I pray persistently and humbly I can expect to be heard by God!
Children: Such are the kingdom of heaven. . . if you don't come to it as a child you can't come. You can't come.