In The Reason for God, Tim Keller writes this:
If you’re avoiding sin and living morally so that God will have to bless you and save you, then you may be looking to Jesus as a teacher, model, and helper, but ironically you are avoiding him as Savior.
Tchividjian, Tullian (2010-04-23). Surprised by Grace: God's Relentless Pursuit of Rebels (p. 56). Crossway. Kindle Edition.
I love Tim Keller's writing.
It's that whole house on the sand theme that started 2 posts ago. It's that whole Gospel theme that men like Keller, Tchividjian, Chandler, etc. seem to never let go of.
We need more of Jesus, not more of our own effort. Until we see that, we are just spinning our wheels. The answer to the blank in the title is Jesus, not more effort!