Don't. As someone who used them for a long time I can tell you: They are not physically addictive - I could also have easily stopped for a month. When I did s

Don't. As someone who used them for a long time I can tell you: They are not physically addictive - I could also have easily stopped for a month. When I did stop the problems were psychological like the fact that most of my "friendships" were shallow and drug based It destroys your judgment. I once wrote a programming language (a scripting language for an app I was working on). It didn't support minus numbers - something I hadn't spotted until someone complained. It turns you into an arsehole - speed users are arseholes, unreliable , untrustworthy and self centered. On the plus side if you accept that you are going to do it and manage yourself (make sure you have nutrition , plan for coming down, learn to deal with the myriad of problems - getting stuck in a "groove" - ie fixated on one small (and often pointless) task, memory issues etc.) you can be extremely functional on it - I took it for years. The being an arsehole thing is the main reason I stopped - I haven't touched it for more than a decade now. I have had some good results with Adrafinil which gives great focus, has less of the bad stuff and if you work with your body clock even lets you sleep pretty normally. If I need to sprint on something I take it for a few days and get loads done.