My advice? I will fall back on the saying "if you can't take the heat stay out of the kitchen".
There are many reasons why someone might have to medicate themselves if they have a situation that is not under their control (family problems, health as only two). And I"m not saying that someone should medicate themselves in those situations but just that it's more understandable when you have to deal with some external things that you have little or no control over. But with respect to "getting ahead" if you can't take the pressure, and you need to medicate, you should seriously consider setting your goals a bit lower. To me if you are thinking of this as a "never-ending wall of burden" then you have not chosen the correct career path.
Of course others may disagree and feel differently but I've seen to many people reach for the brass ring and as a result of pressure which they can't handle fall into some dependency or behavioral problem as a result of that dependency.