The most neglected area in the lives of most "defeated" Christians is probably Bible reading. This should be the most exciting part of the day and it can be when you realize that it's GOD'S word we're reading. If you want to end up a theologian or a biblical scholar, that's great. Study it that way, but I'll let you in on a little secret. Some of the godliest and most knowledgeable Christians I know have had no formal biblical education.
There is a world of difference in just reading the Scriptures and letting them come alive in your life.