How can one get rid of the habit of looking at forbidden images, which is accompanied by feelings of guilt, especially with religious commitment and good upbringing?

You must hasten to repent from looking at forbidden things by ceasing, regretting, and resolving not to return, and by concealing your sin and not disclosing it. A sincere repentance is accepted, even if it is repeated. Beware of Satan's whispers leading you to despair of repentance. Strive to adopt the means that help you stay away from what is forbidden, and among the most important of these is maintaining prayer with devotion, for it restrains from indecency and evil. Rectify your prayer, occupy your time with what benefits you, and frequently engage in remembrance of God, seeking His forgiveness, and supplication.