Destiny cannot be completely changed.
Because if destiny can be changed, it wouldn’t be called destiny. The meaning of destiny is the ups and downs of all aspects of a person's life. From the first breath of air after birth, the power of the five elements of space at that time has destined the destiny. Then in every period of ups and downs in life, destiny is there. A concrete manifestation of the changes in space power at that time.
But you can still seek good luck and avoid disaster appropriately. Just like the weather forecast says it’s going to rain, you have to remember to bring an umbrella when you go out...
This is like a train. You will always stay on your own track, forever, forever.
Reference: Baidu Encyclopedia ~ Destiny