That's actually a discipline you've set for yourself and as long as you follow this rules I don't think you'll ever need to worry about addiction. One of the problems with gamblers is that, they never set some rules and tries to follow them at all cost,
Indeed, discipline is one of the key factors that can be considered to stay in the non-compulsive gambling zone, and still be able to control yourself while gambling to avoid all losses that are much higher, and can become more responsible gamblers.
and being consistent in doing so, to remain disciplined, with all better and wiser self-control, will also give us a much more reasonable situation to stay in quite health gambling situation. It's not easy, but it's not that we can't exactly do.