The tragedy of life doesn't lie in not reaching your goal. The tragedy lies in having no goal to reach. It isn't a calamity to die with dreams unfulfilled, but it is a calamity not to dream. —Dr.Benjamin E. Mayes
People will always change. Some choose to change the environment; some choose to be changed by the environment. A lot of times when you're unable to change, better find the strength from within to make yourself happy.