I cared for my mother for over 40 years & as many other posters have mentioned, at times I longed for release from the tyranny of duty & obligation as I had so little time & energy for my own wishes let alone needs.
Once my mother had died, I found that l did not just get the time back, it took some considerable time for my mind/body/spirit to return that time to me. I would wake at the weekend - I was working full time alongside caring - & could not connect with the hours that I had spent caring for my mum & that they were now mine. That phase lasted about 18 months, & I assumed that it was part of the bereavement. Yet other carers who I speak to who become free when the ‘loved one’ moves to residential care experience the same thing.
It has taken me almost five years to come to terms with my mother’ death - still missing her, particularly as Christmas looms - & to make sense of being a Carer for such a significant proportion of my life.
@Hert2Hart point about raised Cortisol & stress is very relevant & helpful. Caring can be a form of sustained trauma is some respects as it can be unpredictable, unrelenting & so isolating. So self-care & being kind to yourself is so important when caring (yes, I know...) & certainly is key part of recovering. I get the point about the brain’s cortisol & serotonin levels & efficiency can affects mind & mood, & are prone to interpreting this medically when what the mind, body & spirit needs is deep rest, recuperation & nurturing.
I found my local Alzheimer’s Carer support group invaluable - the 6 week Carer support programme did me the world of good.
Also the Carers UK online forum is generally good with a section of those who have stopped caring, recently or otherwise.
It does take time to adapt.