Philippians 3:1: “Further, my brothers and sisters, rejoice in the Lord! It is no trouble for me to write the same things to you again, and it is a safeguard for you.”
Joy is one of the fruits of the Spirit that are supposed to be grown by every sincere Christian. It may not be easy in the world that is full of trials and problems. However, it is only under tests and trials that we face pressure under which fruits can grow. When you have no pressure you will not be able to grow. So, learn to rejoice in your circumstances. God is good.