ANSWER:

You must block the means that provoke your desire to do that particular sin. If it is watching haram, cover your tv and delete the app that allows you to watch such filth. You must surround yourself around practicing Muslims that would check on you every now and then and busy yourself with the remembrance of Allah. If your repentance was sincere, Allah will forgive you, in Sha Allah. 

Kindly refer to the following link(s): 

 

I had committed a sin for which I repented and prayed to Allah to not put me back into it. Somehow, gradually my Eeman weakened again and I committed the same sin. I felt bad and I was scared of Allah’s wrath as soon as I realised what I had done.I repented and asked for forgiveness and prayed 2 Rakah for forgiveness. How can I make sure I never fall into the same? Will Allah accept my repentance?