I have always been submissive, although I had never really understood it. It was the kinky side of myself that was always suppressed.
It was around the time when I was going through some major life changes, I began to crave the feelings of being submissive and started to figure out why I felt that way. It was by chance I discovered BDSM, and D/s. I began to experiment with my kinky side, and discovered it was more fun to incorporate it with a D/s dynamic.
I am still learning about D/s and being submissive. I can understand myself and why I tick a lot better now.
As for fantasies, mine are still the same, sometimes they can be a bit more pervy now.