Yeah vaping will have its time. I bet they're already sitting on evidence that it fucks you up.
Prohibition does work very well for kids though. Most people start young as when you're older you know the issues.
So they are keeping it for people already exposed and trying to stop younger people starting in the first place.
They raised the age to 18 when I turned 16 and it dramatically cut the amount we had access to.
It's not like the old alcohol probation. Plus smoking isn't even fun like drinking. It's just gross and bad for your health. And most people don't drink because of addiction. It's a different kettle of fish.
If you struggle to visualise, just focus on your breathing. When you notice you are distracted bring it back to your breathing. Acknowledge where your mind drifted but try not to dwell on it as you focus back.
There are also apps available to help with breathing exercises. I had one that showed a balloon inflating and deflating. I found it easier to focus on that at first.
Counting while you box breath can also make it easier. The count can be whatever you're comfortable with. 5 5 5 5 works well for me.
Look up the windrush scandal in the UK. They can just change the rules and if you can't provide the required proof you'll get deported.
They have plenty of tools to kick out legal citizens.