The one who rests in Christ will produce more fruit than the one who strives with self-effort. This is demonstrated in Scripture and in the real-life experience of countless saints.
There is no question that Paul worked, labored, and toiled. But the difference with Paul is he knew that he was laboring according to Christ working in him. Was Paul lazy? By contrast, he was more fruitful than ever. The end result is his statement, “I labored more abundantly than them all,” quickly qualified with, “yet not I, but the grace of God which was with me” (1 Corinthians 15:10). The “I can do all things” must always be followed with “through Christ Who strengthens me.” If we trust in the Life we will be anything but passive.