I've been there, too. I had a faith that looked great on the outside but that didn't feel as deep as I had hoped. I was doing all the right things...
church every Sunday
Bible Studies, Small Groups, etc.
doing the good stuff and even more,
making sure not to do the bad stuff
Here's the thing I've learned, and it's crazy. There is ABSOLUTELY more to the Christian life than that stuff, and it's not do more or try harder. The same God that created you is inviting you deeper into His plan and His mystery and His abundance.