When you are thinking you are worthless just remember GOD made you for a reason and that reason is definitely not worthless.
You might have gone through a lot and resent whoever did those things to you. remember, Christ went through a lot more because of us and still forgave us.
Today, know that God is bigger than any problem. Don't be discouraged. God will show up and change things for you.
Sometimes God gives us what we want, yet, sometimes He just wants us to be more thankful and wiser with what He has already given.
Life is an uncertain journey. Trust the Lord in all that you do and you will never be lost.