Semi-gross analogy incoming...
I've been lying in bed thinking about grief. It's an odd thing, extremely painful and yet you can't touch it or even point it out. There's no miracle pill to get rid of the pain, no limb to chop off, there's nothing inside of you they can cut out. It's buried deep inside of you, somewhere around the heart-lungs-throat region. In my experience (17 years) it never goes away fully - it's like a chronic scab - it heals over partially, but if it gets bumped hard enough it flows again. An intangible wound. I don't know if that makes sense, but it's the best I can do at 1:20 am.