do not feel worthless !
ok, that is very basic advice, but god loves you. So you can not be worthless !
And praying is easy. Just start to talk and god listens !
Talk as long as you want, he will listen !
Talk about all you want to say and all the non importend stuff. He will listen !
Bring your feeling of hipocriticy to god, tell him. He will listen !
Bring your addicton to hin, He will listen !
Ask him for help. He will listen !
God is there ! And he loves YOU !
So you can never be worthless. Because there is a great, powerfull and wonderfull god loving YOU.