If there is a true profession of faith, there should be a true progression of faith. While you have not arrived at complete spiritual maturity yet, you should be making progress.
2 Peter 1:1-9
In our discipleship efforts, we never reach the point where we can depend upon our own strength. Apart from Jesus, we can do nothing.
Every dedicated disciple must employ spiritual disciplines in order to grow for the long haul. Through these disciplines, you train the habits necessary for your soul.
God has created us for and called us to unique tasks. As particularly gifted and positioned disciples, we each should pursue the needed maturity to do what God has called us to accomplish.
While we all know some degree of biblical knowledge, we each should probably know a little bit more by now. Committed disciples need to strengthen any uncertain beliefs by targeted study.
While we all struggle with sin, we are each prone to wander in different ways. For those confronting disobedience in their own lives, God provides a path of escape through every temptation.
If unhealthy expectations fuel our reasoning for spiritual growth, we will eventually stall out. Our growth must be motivated by delight rather than obligation.
If you feel like you are stuck in your Christian walk, then it is time to start moving again. The solution for spiritual stagnation is distinctive discipleship.