Prayer and fasting are essential to that intimacy.
Mark Batterson, in his 40 day prayer challenge, Draw the Circle, says this:
The reason most people don't feel intimacy with God is because they don't have a daily prayer rhythm. They may have a weekly rhythm of going to church, which is wonderful, but doing so in and of itself won't produce intimacy with God. Can you imagine talking with your spouse or child once a week? God wants a day-by-day, hour-by-hour, minute-by-minute relationship with you.I want everyone to have that kind of relationship with God. So how's your daily prayer rhythm?
This past Sunday I said that the only way we learn to pray is to actually pray. Dive in. Start talking with God.
An intimate relationship with your creator is at stake, and there's nothing greater than that.