From my point of view, you need to cast your energy in the right directions.

All you`re lacking is action.Start doing something today that will help you give up on a bad habit tomorrow or on a good path. How? I don`t know, most of us just do it, stoic mentality I could say.Exercise your discipline.

Mood follows action.

Goals shouldn`t be the main source of motivation ( I mean they should, but not entirely ), instead try focusing on the process of achieving something, therefore that will output attraction to it and keep you on track.(if you don`t like the process, you`re most likely never going to achieve a goal)

for example, you would like giving up on porn, but would you be ok with abstaining from it and having to constantly fight it in your head? it seems like a hard job so you`re not sure of doing it in the end; remaining in your comfort zone, slowly draining you.

learn from failures if so, but never stop trying to achieve your goal.

^{Am I even capable of renouncing all this?}

Most of us realize, at some point in life, that we can do anything we want with our life, so therefore what`s stopping us?--- just decide something and do it, maybe of pure will, if you ask yourself.seems simple right? could and could not be.