Take an honest look at your life and see whether you are actually growing in the Lord or not. If you are not growing then you are grounded. If you are not mature then you are immature. The good thing about growth is that it is a process. It is not a one day thing. It is not an event.
Nobody is born stupid and nobody is born wise. You can grow into wisdom and you can grow into stupidity. You can work on your body for a firmer and healthier look or you can leave it and grow fat. Good things take time and effort mixed with consistency. Bad things take time and no effort with consistency as well.
If you keep walking in the spirit then you will grow and mature spiritually. But once you start walking in the flesh, things go the opposite way. You begin to act immature and make poor decisions. It is not immediate that is why scriptures says “walk” not jump (Galatians 5:16). Mistakes do not cancel growth. It is remaining in that mistake that produces all the problems people have.
Increase in Size
How do you know that you are growing? Firstly, you become bigger. In boxing, there are weight classes to eliminate unfairness. So fights are made according to your weight. In the spiritual realm, fights are not according to your level. Sickness, depression, or poverty will not wait to see your level of spirituality before it attacks. You just have to become bigger than it. If the problem you have today is the same problem disturbing you right now, then you are not growing.
1 John 4:4 is telling us that there is a greater one inside of us that makes us overcomers. Every problem you overcome makes you bigger on the inside. Goliath came out every morning and evening for forty days. No one could take him on except David. David defeated Goliath by acknowledging the greater one in him (1 Samuel 17:45-46). This was the beginning of his Journey from shepherd boy to King David.
If what made you afraid yesterday is still what makes you afraid today then you are not growing. I diagnose a lack of prayer for that. Every problem that has been lingering for years in your life means that you have not built yourself to be bigger than it. Pray till that challenge becomes small in your eyes. You have the backing of God the greater one in you.