I'm going to be straight with you Madog11, cause you're cool.
It's really fucking hard to "stay strong". For me, it's pretty much impossible. If I have some heroin, or some pills lying around, I am going to end up using them. I know that you've only been messing around with opiates for a littlt while, but if you continue to use them regularly (even once a week), you will wind up with at least one hell of a psychological Dependance (if you havnt already). The only people that I know who seem to be able to take opiates recreationally without developing an addiction, never seek them out, and only take them when they're offered freely.
The thing about opiate addiction, is that it is a subtle beast. When I first attempted to stop using heroin, my freshman year of college, I thought it would be no problem. I didn't have a real physical Dependance back then, so I could stop when I wanted. But it was only when I really tried to stay stopped, that I realized the hold that the drugs had on me.
It is possible of course to keep yourself from getting physically addicted, and of course, I really do hope that you can achieve using your DOC only once in a blue moon. I just know that for myself, I would almost rather go without than trying to dedicate myself to using only once in a week, because it would seem like such a daunting thing to do.