Correction; Stretch your foreskin of your penis and pour water over the stretched part.for 15 minutes a day.Water should be of normal temperature.
Nothing is lost if you stop artificial stimulation and masturbate only on natural urge.To stop seeing porno, divert you nind to other activities like yoga, meditation, and general health care.
Try the folowing Mehan snan ( penis Bath) Stretch your fordskin and por water on stretched part of your penis. Iff you the foreskin is removed by operation, you may pat the perinium with cloth dripping with water. Perinium is small muscle betwee your legs. YOu can calm your mind by deep abdominal breathing. Penis bath shoul be taken for 15 minutes a day. this will energise you completely, calming your nerves.
Seek medical help as well.
Masturbation is a natural habit.There would be no harm if you had responded only to your natural urge. Do not dishearten your self. Take it as a challenge to fight the habit of porno warching and maturbation.Wish you best of luck.