Ecclesiastes 10:10 - Using A Dull Ax Requires Great Strength, So Sharpen The Blade. That's The Value Of Wisdom; It Helps You Succeed.(NLT)

Trying to do anything without the necessary skills or tools is like chopping wood with a dull ax. If your tool is dull, you should sharpen it to do a better job. 
Similarly, if you lack skills, you should sharpen them through training and practice. In each situation, sharpening the ax means recognizing where a problem exists, acquiring or honing the skills (or tools) to do the job better, and then going out and doing it. Find the areas of your life where your 'ax' is dull, and sharpen your skills so you can be more effective in God's work.
(Life Application Study Bible devotional)

This is what I had in my reading plan today. The words are so wise coming from The Most Wise God.
This drives us to excel in our work for God. We can do so because it is God 'who works in you to will and to act in order to fulfill his good purpose' (Philippians 2:13 - NIV).