Victim Support were a great help to me. & also very practical, which was good.
I took 5-Htp as I felt sad, and unmotivated but didn't want to take anti-depressants the GP gave me
I socialised and exercised, even when I didn't want to. I lost a good few friendships as my manipulator was very good at turning people against me; it was hurtful but it also meant I was left with real as opposed to false friends.
I did spend several months after the split reading all I could about narcissism and emotional abuse. I felt drawn to do so, all resonated with me 100%. Then one day I decided to stop reading it. It was good to understand it all, but I didn't want to dwell.
The over-riding thing in all of this tho, was to live my best life. I was so determined not to sit there sad, wringing my hands and clouding my life, when this horribly abusive man certainly wasn't going to be putting his life on hold for me. He'd be out there, getting on with his work and social life etc. I didn't want him to have the power to blight my life even in his absence.
I went on holiday, changed my work job & pattern to suit me, did all sorts of things I'd always wanted to do but never got round to. Then I met my lovely OH (despite having resolved I never wanted a man near me again!).
I look back and think how on earth could I have put up with all that? Why? I still don't understand. I thought I'd never get over it, but I certainly did.
3 years after our split I saw him in town, across the road so he didn't see me. I'd always dreaded seeing him. But I felt nothing at all.
You'll come out the other side OP. It takes time but you'll get there.