Like a child who is growing physically as a natural part of life, there's another kind of growth that happens with some effort - our spiritual growth in Christ-likeness. Peter encouraged believers to "grow in the grace and knowledge" of Jesus (2 Pet. 3:18). He said that maturing in our faith prepares us for Christ's return. The apostle wanted Jesus to come back and find believers living in peace and righteousness. Peter viewed spiritual growth as a defense against teaching that incorrectly interprets God's Word and leads people astray.
Spiritual growth requires the solid food of God's Word. Once you read His Word everyday, You will be fed spiritually. The Bible satisfies our spiritual hunger because His Words are powerful. He has a revelation to us everyday if we just seek on His Word.
Even when we feel discouraged and disconnected from God, we can remember that He will help us advance in our faith by making us more like His Son. His Word assures us that He who has begun a good work in us will complete it until the day of Jesus Christ (Phil. 1:6). Do not give up. Grow in His knowledge. Ask for wisdom and guidance from Him so that you can sustain it everyday as you seek on His Name.