The serious student makes the time for God their top priority. This is wise, because it is from God that we get our strength, wisdom and ability to do all other things. When we put Him first, He puts our needs first. We come to an understanding that all things work together for good to them that love God . Being able to roll with the punches is a true mark of maturity.
Maturity comes with age in our physical life as well as our spiritual life.
True maturation takes time, learning and willingness. Growing up is not something that we do alone. We all need parents in our spiritual life as well as our physical life. If you wish to grow into a deep and lasting relationship with God, find a mature Christian to disciple you, put your time with God first, learn all you can and step out in faith. God will honor your efforts and you will mature.