I take 25mg nightly, and couldn't live without it. I have chronic pain from a pelvis condition, without amitriptyline I cant leave the house, let alone have some sort of life.
I was on 150mg at one point when my pelvis was much worse, and at that point I did feel dead to the world as others have said, but at 25mg it's a tiny dose and very unlikely to make you feel poorly.
Hand on heart for me I couldn't live without it. And I detest anti-depressants, but this works very differently from the problematic ones like seroxat.