How to stop gooning for good?

Plain cereal, chastity belts, and regular yogurt enemas.

If this is in earnest then I'd say try to limit time you use your tech if possible. The internet is how it's accessed these days so developing new patterns around not using them is a good idea. It's all just behavior patterns. Some people can stop something cold turkey but others can't.

Don't overly punish yourself if you slip up either. Perfectionism when getting out/off of something you consider bad for yourself reinforces it IMO. You don't want negative feedback from yourself or others and will go back to the familiar even if it's maladaptive.

Get serious about self-improvement in other areas and get hobbies you pour energy and time into. If you have nothing going for you and have lots of free time to veg or do passive things then the temptation will be all you're focusing on. Horniness is energy so even if you distract yourself with doing something non-sexual, the fact it takes energy can help. Things like being a coach potato and watching TV or playing video games don't typically distract enough.

As an adult installing proxies and the like aren't about not being able to get past them, it's about reminding yourself you're trying not to. It helps make some people rethink their compulsive decision to go back to something they're trying to quit. Others it doesn't. There's no foolproof way to quit an addiction or a behavior, you just have to want to do differently enough that your efforts pay off over time.
 
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