As a dominant, you're taking responsibility for seeing yourself and your submissives through some perilous emotional territory. You're also equally responsible to both yourself and your submissive partners, to ensure that those journeys satisfy as much and many of your mutual and separate needs as you can safely manage.
At first this might seem pretty daunting. But keeping one thing in mind will make it easier. In a way, your leading this journey is itself to some extent the destination. It's a bit like being a cab driver for a passenger who just wants to take a ride. There's not really any particular place you have to find. You just have to pick them up, take a safe little trip, and get them home safely. In between, you simply make it as interesting as possible.
There's a more subtle point in that. That is that you have to be driving. If that person doesn't realize that you're driving, or that the car is moving, or if they can't see the scenery rolling by, or if they have to take the wheel at points, then they've been just as short changed as if you don't return them home afterwards and make them walk the last few blocks.
To push this metaphor just a little bit further, the passenger may also be a bit understandably irate at the end if any of those instances are the case. They key to preventing this negative outcome and keeping it positive is what I call accountability. It's a somewhat nuanced aspect of the responsibility that I've brought up elsewhere.
To put it another way, when you're being dominant, the submissive has to realize that you are, or else it's cheating. It doesn't always have to be some formal agreement, or spelled out in any elaborate way. It doesn't have to be scheduled or measured and can be completely spontaneous. But the submissive has to consciously realize that some part of their volition has been surrendered to you in some way.