Change is the only thing this is for sure.
You are going to get older and go through life. You are going to progress though different grades and schools. You are going to change where you live multiple times. Your friends are going to change. Everything in your life is going to change at one point or another. Even your body has a complete set of new cells in it every 7 years.
Knowing how to deal with change will make your life a whole lot easier and less stressful. Know that what is today will not be tomorrow. As much as you try to keep things in your control they will eventually change.
What are the best ways to deal with change?