“For if these things be in you, and abound, they make you that ye shall neither be barren nor unfruitful in the knowledge of our Lord Jesus Christ.”  
2Peter 1:8

It is possible to always be fruitful and productive in your knowledge of the Lord; what you know about the Lord Jesus produces results in your life.
“The LORD is my shepherd; I shall not want.”  Psalms 23:1
Knowing he is the provider should be manifest in your life, as you declare that he is your shepherd and you shall not want; when that knowledge produces results in your life, lack and despondence would be far from you.
“Ye are of God, little children, and have overcome them: because greater is he that is in you, than he that is in the world.”  1John 4:4
Knowing that he lives in you should produce results in your life, meaning inside of you, there is an occupant and he is Lord and as such no room for sickness, fear and failure!
It is totally awesome that we can come to a place where everything we know about Jesus; who he is, what he can do, would produce results in our lives- this is God’s desire for us.
He says for us to live that life, there are things that will “make us” that way; he expatiates in the preceding verses.
Today, meditate on this- God passionately desires that everything you know right now about him produces results in your life, it is absolutely possible and soon enough, it will become your reality.