How do you spend your time? Do you enjoy life or do you just take it as it comes? You do not have to live a life full of worry and regret. Everything that has happened in your life has happened for a reason. People come and go and situations change. We do not always know the reason for these changes. The important thing to realize is that there is light at the end of the tunnel. The Lord will always make a way of escape.
Be thankful regardless of the situation because you cannot change anything. Only God can change things. Stay prayerful and thankful. Things will work out for your good.