Fruitfulness has limitations, so does growth. Fruitfulness could sometimes have a wrong effect if the source and nature are outside the plan of the Lord for people's life. There is a type of fruitfulness been mentioned in his epistle to the Galatians which is of the flesh bad and deadly.
There is also good and blessed fruitfulness as found in Galatians 5:22-23 which is a fruit of the only spirit.
So, let us consider the secret behind blessed fruitfulness. In John 15:1-5, it is plainly stated that abiding by the Lord Jesus is the secret of bearing good fruit.
Being born again is the first secret of divine fruitfulness while doing the abiding in Jesus the second. So, how then can we abide in the Lord Jesus? It is very simple, just obey all His commandments.
Another thing is that everyone will surely eat out of whatever fruit he or she bears whether be it good or bad. Therefore, it is wise for you to choose this moment whether you want to bear good or bad fruit.
The good news is that everybody can bear good fruit provided the person comes into the Lord Jesus by faith in the saving power in His blood.