How to be filled with the Holy Spirit

"Are you sure you want to be possessed by a spirit other than your own? Even though that spirit be the pure Spirit of God? Even though He be the very gentle essence of the gentle Jesus? Even though He be wisdom personified, wisdom Himself? Even though He be as loving as the heart of God?" —A. W. Tozer

In a little book that's hard to swallow, A. W. Tozer teaches plainly who the Spirit is, why we should desire Him, but why few of us do. He instructs us in how to be filled with the Spirit, but first poses this question: Do you really want to be filled?