Sorry for the passing of your Mum. Im glad she passed peaceful.
Also feel that by realizing how lucky you are with the love, support, family, friends. more is really a great frame of mind to get you through this time.
I just had a few family losses and the realization of how blessed I am has really helped (even though I have a lot of issues and whine a lot, I do know Im so lucky to have my family, friends, opportunities).
Also know the people Ive lost would have wanted me to be happy, to celebrate the positive time they had with us and not be sad for their loss, but to look at the amazing qualities they have and implement them into my own life.