Upon reflection, I have come to the realization that when I do use CF as a way to get what I want it's almost exclusively situations that would require me to do some kind of physical labor. Whether I'm actually able to do whatever activity I'm being implored to do is what would be the determining factor in whether or not it could be said that I use my CF as a way to "get what I want" in this situation. Usually, I CAN do the physical activity but simply don't WANT to, so I'll say "I'm really not feeling very good..." or something like this.
But another aspect of this is that in serious arguments with my parents I have been kicked out, but always allowed to come back because I have CF. They tell me "if you didn't have CF, you'd be on the street!" So, knowing this, I do sometimes act brashly (not taking into consideration the opinions of my house mates) in the confidence that I won't actually reap any kind of serious punishment.
I feel kind of stupid for making this topic now, because I've probably made myself look like a manipulative idiot. It could be said that I DO use CF as a "way to get what I want", but it's on such a small scale and for things that are directly attributable to CF, i.e. physical activity and my unwillingness to do it, that makes me wonder "Is this really even using CF to get what I want? Am I really being manipulative here? Couldn't it be said that this is a legitimate complaint?" ETC...
Like I said, I've been reflecting on this matter for a few days and these are the conclusions I've come by so far.