Some drugs tell me upping the dose is not really in my best interest. Like if I take a sufficient dose of opioids, I don't feel the need to take more, or doubt my dose. With DXM, I know not to go above a certain dose. With booze, this usually doesn't apply so much, and it doesn't apply at all with benzos really. If I were left to my own devices I could burn through benzos very quickly, and have had the desire to up my dose since day 1, well no, there was a point 0.5 mg Xanax satisfied me. Hah! No more! I always want to up my barbiturate dose when I get the chance to do them, but on the other hand worry about OD cause I take benzos daily and often extra with butalbital if I am taking it (I know, dangerous). I don't have much experience with stims, so I can't say much there. GABAergics are fiendish for me in that I always would up the dose. I can control amount of an opiate I would take at a given time, but that doesn't mean control the frequency of dosing. Whenever I have free access to opioids, they are used daily until I can't any more.