The line from the parent is:

>Smart strategy can make things easier, but there is no strategy that makes it easier to stop heroin than do to keep it.

You then say:

>Want to stop taking heroin? Stop surrounding yourself with people who take heroin. See a medical professional. Get away from wherever you get the heroin. Try to get your life in order so you have other things to look forward to.

Those things are all a complex sequence of tasks that requires a huge amount of planning, logistics, task initiation, etc etc. Not to mention money, uncertainty, fear etc. They are literally orders of magnitude more difficult for a person to do than continuing to take heroin.

It'd be like if I told you, "want to stop being hungry for breakfast in the morning? Just go change your whole life instead of eating a bagel."

I think this is good advice (don't just try to exercise your willpower, change your surroundings), and it holds for making good habits as well. If I want to start doing daily exercise, it's not likely to work if I just wake up at six and try to will myself to do it. Make an appointment to play tennis with somebody the day before--then you're socially obligated to show up. Do it frequently enough, and pretty soon you'll know a bunch of people who also play tennis; they'll start making appointments with you to play. Is this a "habit"? Or is it just a natural outcome of the environment you've surrounded yourself with?

did you even read my post?

My point is the inverse. Resisting the urge to do heroin is a necessary part of every solution. Necessary but not sufficient

If your strategy is exert no willpower with respect to your cravings, it doesnt matter how much support you have or how many life changes you make.