The inner man is always at work. However the inner man is deprived at times. As humans we tend to focus on the material things 1st. Then when difficult times come, there is no Word of God within or there is very little and the storm takes control. The inner man needs to be taken care of 1st.You can speak and give out only what you have taken in.
How do we take care of the inner man? Read the Bible to understand who you are and as you read a relationship will build with God through Christ Jesus.
The Bible tells us to study to show thyself approved unto God a workman that needed not to be ashamed, rightly dividing the truth. ( II Timothy 2:15).
Strengthening the man by reading and studying the Bible is like the parable in Matthew 7 regarding the person who built a house on a rock . When the wind and rain came the house stood because it had a sure foundation.