So sorry to hear of your loss.
One thing I've found after losing my mum a week before last Christmas is the different emotions. Everyone is different in how they cope and for me it was being busy initially, sorting the estate out etc but the past few months the grief has caught up with me and some days I find it very tough indeed. I've gone from being proud in myself after caring for her the past 8 years to beating myself up that I could have done things better, to anger that she passed away at all. I also find it very hard to accept in my mums case how you start the day happy as Larry enjoying life and in a matter of hours you feel unwell and then days your gone.
As you say enjoy life as much as you can.
Tim.