Here is a great snippet from Alistair Begg on getting ready for church:
Do you think that you can spend all of Saturday on yourself and idle pursuits, go to bed late with your head full of nonsense, waken up slovenly, drag yourself finally into this building, and discover that as a result of somebody reading two verses from the book of Psalms, hey presto you just became a Spirit-filled worshipper? If you think that, you need to think again. Preparation is absolutely crucial in the process, and the way we spend our waking moments on the Lord’s Day sets the stall for the day.
Alistair Begg (in a sermon called “Concerning Worship”, Truth For Life)