I'm a bible school teacher. at first, I did a lot of good characteristics that God has told us to do. but after a year, it becomes worst. i fall again on the addiction of pornography and i shout harshly to my mother whenever i get mad.. I am not this kind of Person that i want to be. i am guilty and ashamed for what i did. please, please help me to pray. i also want your advice regarding my issue. i believe God will change my heart of stone and give me a new heart of flesh :'(