Taken Lipitor for 4 years, 20mg. Along with the muscular pains I...

Taken Lipitor for 4 years, 20mg. Along with the muscular pains I've noticed an attitude change in my work. I am a self employed engineer, and attention to detail is essential. Nowadays, I can hardly be bothered to chase up a job, especially if it involves travel. I make mistakes more often (like connectiong 240VAC to a 24VDC device!) and I lose my temper more easily. Been off the tablets for 2 days due to a mistake in ordering my repeat. I actually feel slightly more human in that short time! Problem is I dare not stop taking them. On the physical side, if I remain in a position for any length of time, I have to carefully un-knot myself when I move, or the pain is horrible. Great eh?