Pastor John Ortberg writes in Leadership journal:

Significant human transformation always involves training, not just trying.

Spiritual transformation is a long-term endeavor. It involves both God and us. I liken it to crossing an ocean. Some people try, day after day, to be good, to become spiritually mature. That's like taking a rowboat across the ocean. It's exhausting and usually unsuccessful.

Others have given up trying and throw themselves entirely on "relying on God's grace." They're like drifters on a raft. They do nothing but hang on and hope God gets them there.

Neither trying nor drifting are effective in bringing about spiritual transformation. A better image is the sailboat, which if it moves at all, it's a gift of the wind. We can't control the wind, but a good sailor discerns where the wind is blowing and adjusts the sails accordingly.

Working with the Holy Spirit, which Jesus likened to the wind in John 3, means we have a part in discerning the winds, in knowing the direction we need to go, and in training our sails to catch the breezes that God provides.

That's true transformation.