Thanks Denu and I agree. Relationships are as varied and individualistic as the people in them. I was on my own for a long time before I started exploring this lifestyle and I know for a fact that I am more than capable of taking care of myself in most any given situation life throws my way.
Some things one can only learn from experience and I have discovered that my independent streak is much stronger than I ever imagined and I learned that by trying to be a 24/7 submissive and realizing how difficult that was for me. I discovered that being submissive in a sexual context provides a release and counterbalance to my fierce need for control and independence in every other aspect of my life.
As to the OP's original question, I think it is more difficult when one person is ready to move on and the other person in the relationship isn't regardless of their power orientation or context of the relationship.