Becoming Me (Diary of a Teenage Girl Series: Caitlin #1) Book

I am a Christian, and I liked the book upon the first reading, but in all seriousness, it is rather mediocre. Caitlin didn't have much of a personality. There was longing for popularity, dealing with parents going through marriage problems, dating problems, and teen pregnancy. It was a little predictable and cliched. It was also quite preachy at times. I'm all for not having premarital sex, but this is a subject that has been covered in sermons everywhere, and I didn't feel like the book approached the subject in a new or deep manner. I felt like the author was really trying to hammer in the message rather than just TELLING A GOOD STORY. Which is pretty much my problem with a huge percentage of christian fiction, especially YA fiction. Hasn't anyone thought that maybe Christian teens are tired of the same messages being thrown at them, as if they haven't gotten it already? Believe it or not, we aren't stupid, and there are a lot of Christian girls who are far more in-control of their emotions that Caitlin.
I was also disappointed because the title suggests that Caitlyn was actually going to go through some self-discovery stuff, something that has been important to me in my life as a Christian. But alas, I didn't really feel it there.
Was it an a bad book? No. Was it a good book? Not really. It did have some parts in it that were good, I suppose, but not enough to compel me to read the next one.
I did read this book a couple years ago now, but I doubt it's improved itself.
[EDIT]
I'm actually curious as to whether the book would have been better if it had been told from Beanie's [The best friend] perspective...