I’m sorry to hear that.
In a similar vein, 18 months ago I came out of an 11 year relationship. It took me a while after that to realise that my sleep cycle was not actually mine. Naturally, I’m a morning person but had been forcing myself to be a night owl to fit with my partner’s rhythm.
These unexpected but dramatic changes in our lives always lead to self-reflection and growth - if we let them.
I hope 2019 goes well for you!