I'm no expert on this, but I have some thoughts.
To me, your subconscious is yours, just like your heart or your lungs. It is true that you have little control over whether you have them or not. Pretty much, if you want to stay alive, those things must exist in you. But, the way I see it, the subconscious is a lot like the heart and lungs. If you exercise a lot, they get to be really efficient. Your lungs get in shape and stop burning, your consumption of oxygen goes way up, and your heart pumps blood around really efficiently. In my experience, people who frequently use their subconscious have a really efficient one. Also in my experience in the art world, people do exercises to try to open their channels to their own subconscious.
So, I think, by that same line of thinking, you can take as much credit for actively using your subconscious as you can for being in shape. Certainly, the way it works is starkly different from anything conscious, but that doesn't mean you didn't train it. I can think of several dissociated people offhand that are subconscious couch-potatoes.
By that same token, I can think of at least a few people that are subconscious couch-potatoes with a laughable amount of self knowledge who would just love it if they could get me to believe that my talents are just random--that I happened to win the talent lottery or whatever. Then it's a few small jumps for them to convince me to give them my 'unfair' rewards earned by my talents, while also absolving them of any blame for not working to become better in their own lives. Maybe it's only coming from me, or the people I've been exposed to, but your post echoed feelings of this kind of attack in me.
I can empathize with the confusion of what "me" really is. To go back to the lung example, I don't sit around and consciously tell my lungs when to breathe, and then how to process each breath. Mostly, I never ever think about them until they either hurt tremendously, or stop working. I could see how I could relegate them from my mental "self" as just an external tool. However, I can't actually relegate them from myself, not without dying. My lungs are in cahoots with me, but more than that, because it is impossible for them to be in cahoots with someone else. I think that your subconscious is the same way, and I really don't know how better to define how something can be any more a part of you.