Why the perplexity?

I am 17 years old, studying 12th standard. There is no dearth of religious zeal in our house. There is always prayer and scripture reading. I desire to live zealously for the Lord. However, there are instances when I waste time using my phone or playing video games. Once, my friend showed me some videos on his mobile. I refused to watch them because they were wrong and obscene films. But after that, when I was alone, those wrong scenes came to mind, and the yearning and desire to see them again kept coming. Despite my desire to live a holy life, these things affected my mind greatly, and I stumbled without knowledge. I, who have been watching pornographic movies for the past three months, have no heart to give it up. On the one hand, I feel like someone is telling me in my ears and heart, “What you are doing is a sin; this is wrong; leave it.” The guilty conscience, on the other hand, condemns telling me, “You are a sinner, a corrupted person”. Sometimes I get the thought that watching this on my mobile is wrong. But unknowingly, I pick up my mobile and start watching those obscene videos. Because of this, I am unable to study properly. I have failed in all subjects, and my future looks bleak. My parents say, “You should stop studying and do farming”. I don’t know what to do. My desire is to do well in my studies and become an IT software engineer. But it looks like I’m stuck with an irreversible addiction. Will Jesus forgive me? – Kevin, Villupuram.