What kind of pillow do you sleep on? Do you sleep on your back, side, or stomach? I found once I got a bigger pillow (I'm a side sleeper) my neck and shoulders improved a lot. I was putting too much pressure on my shoulder while sleeping. Two pillows were too firm, but a new one made specially for side sleepers was just the ticket. Got it on sale for less than $20. figure to replace it about every 4 to 6 months.