Speaking in terms of tech addiction, there are tools and strategies out there to manage. Anti-engagement tools you might call them. The "Digital Wellbeing" app on Android can be used to limit certain apps, such as to one hour per day. The unhook.app extension neuters YouTube's engagement by disabling things like suggested videos. I have also set a Windows Task Scheduler task to run shutdown /s /hybrid /t 60 in the evening. Having a reminder of goals to curb irresponsible behavior can often be enough to curb them.

In a perfect world I'd be able to set a weekly calorie limit. Charge me double the cost and send the overage to the charity of my choice for any food over the limit.

A government body limiting who can buy food isn't really a good idea, so it only works in utopia. It could work for non-essentials though.