Addiction has many different kinds of forms. I'd say you should figure out what your addiction looks like on a deeper level. Healthy gamer gg is a really good resource for this, i'd recomend you consume some of his youtube videos about addiction. But yeah. Long term addictions are really weird because they are straight up part of who you are. To let go of them is letting go and fighting part of yourself. Willpower is not enough, part of your will is literarly dependent on the addiction. They lay deep in what makes you who you are. You are gonna have to find a deeper part of yourself that can drive you and give you the courage to let go of the part of you which you do not accept. The fact that you even want to let go of this addiction means that there must be a deeper part of you that is more important to you, find out exactly what that is. And healthy gamer gg, for real. It is a good resource for this kind of stuff, check it out.

Epictetus discourses is easy to read and has a lot of depth to open yourself up to new ways of viewing reality. (Each chapter is no longer than 2 pages). Then read some of plato (meno and Cratylus are short and personally my favourites). I don't know much about buddhism or taoism but before hopping into those philosphies I would recomend reading cognitive set theory by Alec Rogers.

The book builds a model of viewing reality different from the cultural model of how one should view living and achivments of goals. It is a model. The book is trying to make you build that model and apply it to the model you have of reality. The book uses physics and first principles in order to meet you at axioms of reality that pretty much all humans have. Then use those axioms in order to lead you to the model explored in the book, which most likely differs from your model of reality. In order to gain something from the book you are going to have to admitt and understand that you have a model of viewing reality (If I do this, this happens. In order to achive this I must do this. This is possible. This is not. etc). Then some courage is needed in order for you to follow along with the model and let it influence you on a deeper level. I have read or listened to a number of "good" books but gained nothing from them. The reason is always either that I am missing something I have to admitt before even starting or that I am not courages enough to actually follow along with the building of the model and end up reading through it with some ignorance ("This doesn't apply to me", "This might be helpful to know in the future but I a not going to do anything right now").

No It does not. If determinism is true. Then objectively there is no such thing as free will. But we do not have an objective experience of reality. We are stuck into subjective beings with a limited cognition and only 5 perceptive senses. Our world only exists from our point of view. The meaning of words only carry any meaning from our point of view. The word "excuse" only exists from our point of view. It is completely meaningless to try to apply this word to an objective model of reality. "Sinful action is excused because of determinism" Is like saying "the sky isn't blue because color only exists from our point of view. ". Free will may not exists objectively, but from our experience it does. So do good things, be a good person, whatever that means to you. And sinful action is not excused

I like Julian Ks viewpoint. 1. Find your purpose (That which makes you valuable to others) 2. construct a goal (What you wish to change about reality in order to fulfill your purpose) as a beliver in God, these actions are carried out as a form of submission to a higher being. Following my nature even though I have given the ability to chose for myself. Although this model could be applied without it. Just ask yourself "Why haven't I killed myself up to this point, and why don't I kill myself right now?", most likely It's because you want to be someone that is usefull to others. To give love and be given love. Also it's fun to be alive if you just free yourself from the self inflicted mental burdens. that may be enough if you don't want to do anything painful without a perfect atriculated meaning of life. Might as well enjoy it in that case.