Hey all, I need some advice here.
I've made progress with not watching and not searching up the wrong things B"H. Still not perfect, but its a work in progress.
What I am really struggling hard with these days though is the masturbation. It is a nightly challenge and I can rarely go three or four nights in a row without doing it (which itself is a big improvement from the every night that it used to be).
I though of an idea that might help me, but I need some outside opinions because I don't know if its actually my Yetzer Hara that's pushing for it. 
Back in my watching days I've seen videos where men are put into chastity devices not allowing them to have pleasure. In a way I found this arousing. Recently I thought that if I put myself in one every night and kept the key in the bathroom, it would be a deterrent for me and make it easier to control.
​However I'm really not sure because, as much as I'm embarrassed to admit it, the thought of it does arouse me. And that's why I need opinions from you guys to let me know if it is actually gonna help or make things worse.
This was hard to write,
Thank you all.

I applaud you on taking the courage to write. I know how hard it can be.

My opinion for all that its worth, is that it is a bad idea. I highly doubt something which is arousing to you and will be a constant reminder to stuff you used to watch, can work for your benefit. I think the risk far outweighs any perceived benefits.

Hatzlacha Rabba

I don't know how much my say is worth.
but... 
if you plan on putting it on at nights then it must be you still have access to the key,  because You need to take it off in the morning. So if you're caught by a urge there is nothing stopping you from simply taking the key and opening it so there is absolutely no Gain. It's just the yetzer hara thinking of new ways to arouse you.
(There may be more down sides of this I just answered a direct answer to your question)
I wish you much hatzlacha!!
all the best!! 

I don't know how much my say is worth.
but... 
if you plan on putting it on at nights then it must be you still have access to the key,  because You need to take it off in the morning. So if you're caught by a urge there is nothing stopping you from simply taking the key and opening it so there is absolutely no Gain. It's just the yetzer hara thinking of new ways to arouse you.
(There may be more down sides of this I just answered a direct answer to your question)
I wish you much hatzlacha!!
all the best!!