I exercised, talked a lot, started having a lot of sex (I appreciate this isn't how everyone copes, but I kind of fucked the pain away, sorry if that sounds crude....with one person mainly.). I had been in a 21 year relationship since the age of 17, and well, now I have semi healed I am living a bit like a teenager again when the kids aren't here.
But in the early days I talked a lot with my closest friends, cried, bonded even further with my two boys) and not much else. I ate what I could when i could, I just about functioned for the first six months.
Don't rush it, it gets easier. Take your time and let yourself be sad at times and happy at others. Learn about yourself however you feel is best.
I guess people deal with things differently, different dynamics to play, but talking it out does helps. You'll be grand again soon enough.
My ex was EA and I have had to ease myself away quite slowly, he still hasn';t quite got the message 18 months on, as he doens't really have an idea what I am doing now (has taken a long time to get to this stage). Cutting him from social media helped a lot. And not worrying what he thinks anymore. He can't hurt me anymore, I have new friends, had some fun, been low, but my god I am so much happier.
Good luck (( ))