Evangelicals sometimes expect too much or, to put it more precisely, we look for a kind of change God hasn't promised. It's possible to expect too little, but under-expectation is usually a cynical reaction to dashed hopes for too much. We manage to interpret biblical teaching to support our longing for perfection. As a result, we measure our progress by standards we will never meet until heaven.
We must admit that simply knowing the contents of the Bible is not a sure route to spiritual growth. There is an aweful assumption in evangelical churches that if we can just get the Word of God into people's heads, then the Spirit of God will apply it to their hearts. That assumption is aweful, not because the Spirit never does what the assumption supposes, but because it excused pastors and leaders from the responsibility to tangle with people's lives. Many remain safely hidden behind pulpits, hopelessly out of touch with the struggles of their congregations, proclaiming the Scriptures with a pompous accuracy that touches no one. Pulpits should provide bridges, not barriers, to life-changing relationships.
We must come to the Bible with the purpose of self-exposure consciously in mind. I suspect not many people make more than a token stab in that direction. It's extremely hard work. It makes Bible study alternately convicting and reassuring, painful and soothing, puzzling and calming, and sometimes dull - but not for long if our purpose is to see ourselves better.
Men are easily threatened. And whenever a man is threatened, when he becomes uncomfortable in places within himself that he does not understand, he naturally retreats into an arena of comfort or competence, or he dominates someone or something in order to feel powerful. Men refuse to feel the paralyzing and humbling horror of uncertainty, a horror that could drive them to trust, a horror that could release in them the power to deeply give themselves in relationship. As a result, most men feel close to no one, especially not to God, and no one feels close to them. Something good in men is stopped and needs to get moving. When good movement stops, bad movement (retreat or domination) reliably develops.