An out of context proof text is a shaky way to try to interpret God's love and will for us.

It does, however, tend to make many sinners fall back into a lukewarm state..and do you remember what Our Lord promised the lukewarm?  He said He'd vomit them out of His mouth. 

Maybe factor some of these other passages into the equation to arrive at a more mature and substantial understanding about the role and action of God's grace, and His will for us each day.

"Whoever wants to be my disciple must deny themselves and take up their cross daily and
follow me"  

"For whoever wishes to save his life will lose it, but whoever loses his life for My sake and the
gospel's will save it."  (and many many many more). 

Our cooperation is necessary to be saved.  He opens the door we can't, but we must walk through it.