Below is a link to an piece written by John Piper. He lays out four reasons why we should passionately pursue God, and even suggests that we may not be saved if we aren't producing "fruit of the Spirit" along these lines.
Four good reasons to passionately pursue God. First thing, we should want to know Him more and more each day. Second, to confirm our Salvation. So many think that it is just a one time decision, but rather it is a continuous pursuit of God over and above everything throughout life. The decision is just the beginning. Third, we are imperfect and in need of a lot of help. Fourth, we belong to Jesus and He has pursued us. I like these four Reasons.
Please click on the link below to read what Pastor Piper says about these four things. His writing sure has blessed my soul.