Blessed is the man who walks not in the counsel of the wicked, nor stands in the way of sinners, nor sits in the seat of scoffers; but his delight is in the law of the Lord, and on his law he meditates day and night. He is like a tree planted by streams of water that yields its fruit in its season, and its leaf does not wither. In all that he does, he prospers. Psalm 1:1-3 (ESV)
To have a fruitful life you must spend quality time alone with God, studying HIs Word and praying. Your prayer life with God is a two-way dialogue, like the Psalms of David and Christ’s prayers to the Father. As you draw closer to God, you allow Him to be closer and evermore present in you. Then and only then are you prepared to bear the best fruitful life. Him in you and you in Him, invisibly, and you in the world (but not of the world), bearing His fruit and shining His light for all to see.
We are all called to action as believers, and our faith to do good works has to be in proportion to our actions, and our actions in proportion to our faith. In other words, your “fruitfulness” cannot exceed your “rootfulness”.
Remember also, that the root, from the seed, comes before the branches. In nature, you never see seeds going directly to branches without the roots. God will work within you to produce deeper roots as you spend more time with Him.
“Do not strive in your own strength; cast yourself at the feet of the Lord Jesus, and wait upon Him in the sure confidence that He is with you, and works in you. Strive in prayer; let faith fill your heart-so will you be strong in the Lord, and in the power of His might." - Andrew Murray