I've been asked numerous times, both on this website and FL why I consider myself a slave, and not a submissive.
The difference to me between the title “submissive” and “slave” is this.
In my opinion, one who identifies as a submissive has a lot more control overall. They submit to a person only when it pleases the submissive, they have all the right in the world to change what’s going on. They ultimately have the final say and can walk away from anything if they just don’t feel like doing it. A slave, on the other hand has given up all control to her Master. It is HE who has the final say in things.
For example; I have a lot of freedoms. I have quite a long “leash”, I guess you could say in comparison to more strict D/s couples. He allows me to make a lot of decisions for myself, but he has trained me so I know for the most part what he likes, and what he doesn't. However, at the end of the day it is HE who decides my actions. He trusts me fully to act in a manner pleasing to him both when we are and aren’t together, so he doesn’t feel the need to “micro-manage” all my activities. He could, if he wanted to. He has that right.
If I’m unsure of something he might or might not want me to do, I always ask. An example of that; A few weeks ago, I dyed my hair. I know Sir is somewhat particular about my hair, so I asked him permission to do this. He said yes, but didn’t specify what he would prefer because he trusts me to keep it within the realm of what he finds aesthetically pleasing to him. Could he have told me EXACTLY what he wanted? Of course. But he didn’t.
So there you have it. Your mileage may very, this is not the be all and end all. Take it as you will.