Eveybody's changing

The only thing constant in this universe is change. Well apart from death, change is something that we know is going to happen at any time. We expect it. Everything under the sun changes. One of the biggest changes are behaviour in human beings. The people around us. Some people change for the better and some people change for the worst. Change always had an affect on people, whether its is good or bad. Everybody changes, sometimes they just forget to tell us that they have changed.
What do we do when the people that mean the world to us suddenly change? Move on I guess. Its the only way to say that "yeah shit happens, but what are you gonna do about it?" Some people just change overnight and the reason is unknown. No matter how hard you try to find out the reason, you cannot. The person has changed and you probably are not on the same page. You have become different people. Its sad when they change, its even worse when you dont know how to handle the overwhelming change.
But it is a part of life. What kind of life is it when you are living the same everyday?