Take time to feel grateful for whatever accomplishments you've had, big or small, NoFap related or unrelated. You've done a wonderful job.
Maybe look at what it has done to your life and what it is doing to you and how it is messing you up in a bad way.... ...
Perhaps posting some thread in the self-improvement section to develop any habit that you want to :) Once you start posting you'll get back your interest I guess :D
Relapse is progress. Think about it, did you ever relapse before you started NoFap? Learn from your lessons and move on. Be kind 2 yourself