I started in July '06, so a little over a year. I attend class twice a week, and, I'm sorry to say, don't have much time for training on my own in between classes.
Well, you have only been doing SPM for just over a year... I found (and still do at some points find) it hard to do certain techniques I'm taught. I just do what's natural for me. For example, I recently took up Aikido. You can only imagine how hard it is for me to not just automatically do an arm bar, a hard block (TKD seeping through), or some sweep... My point is, it's something that'll not be easy to work through, but be persistent! Can you start off kind of slow, just so you can get the feel of the moves that you need to execute?