Nehemiah 8:18 reminds us that the JOY of the LORD is our strength. Through times of confusion, pain, mourning, etc., we can become very weak; especially spiritually. I've experienced this recently with the passing of my mother in January. I've experienced anxiety and had moments where I don't feel like myself. I have people in my life that remind me of truth, but the best encouragement has come from prayer and time with the Lord. On my own strength, there is no way I could get through the day. My strength is short-lived. God's strength is consistent.
We you are weary, remember the truth: You do not have to rely on YOUR strength. The Lord is good and sovereign.
As we have been discussing in Joshua, the Lord goes before us. There is nothing that will surprise Him. When we are faced with temptation, run to Him, knowing He will supply your every need. In all things, allow His joy to carry you through the day.