Is looking at porn the same level of haraam as looking at pictures of women? And how can an individual stop this had habit? I've tried praying 5 times including Tuhajjid. I tried fasting then but somehow I keep going back.

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Looking at any image with lust is forbidden, other than that of your wife. Porn addiction is like any other addiction you need to deal with it harshly or it will remain.
One way to abstain is to make an oath that if I look at any images I will fast the next day.