Desire is not wrong or sinful. It just needs to be directed.
In fact, we want to pursue God's will with great intensity and passion.
We serve Him as he wishes. This gives a sense of willingness and a motivation of love.
29 Jan 2011 add.....
So surrender does not just mean giving up of oneself but of adopting and following another - the one we surrender to. It is the transfer of our Lordship, from self to Jesus.