At the risk of sounding heretical, I want to ask you to forget everything you've heard about "childlike faith." It is one thing if you are a child, but if you are 21 years old and still clinging to the faith in God you had when you were 4 years old because that's what mommy and daddy always told you, I do not think this kind of "faith" honors God at all. There is a certain point in brain development when we are able to question for ourselves what is true. When Jesus said, "Unless you become like the little children, you will not enter the kingdom of God," I do not think he was referring to the doubtless faith of a child (which, as a matter of fact, may not be as doubtless as we believe); I think he was referring to humility and a willingness to admit our mistakes.
"Faith is not a leap in the dark, but it is a leap." - a beloved professor of mine