Some thoughts based on my personal experiences: A mind that carries many thoughts, play many records throughout the day. Which signal do we catch depends upon our day to day frequency. It could be serene or turbulent. Does it get affected by outside environment? Many times I felt that keeping the outside conditions constant it keeps on changing. From one form to another then back on first and so on and so forth. Many times I felt that a small disturbance keep me upset for many days and other times major crisis also keep me calm. Major means major. It was once the question of life and death of my h and my child both at same day. But I wonder that I was not in a disturbed state of mind at that time too. Many things makes this possible. First I think is destiny. If we really are in danger then we get the sense. The changing position of graha could be the reason for our emotions and feelings. Second is our experience of life. If we have experienced a lot before then we will not be annoyed easily. But this mind also likes to play roller coaster that takes tight turns, steep slopes, and sometimes inversions. We just keep on moving forward with the flow. It's not easy to change position but again we come to the same place. What's the benefit of this change. We keep on looking towards the top and we are not even able to stay there for long but still at every ride we just see to reach it. What game it is playing with us. Just keep wondering and keep enjoying.