Sorry to hear about your mom!
I've always wanted to get into cross fit, but it's just out of my price range.
I was in a rut as far as gym motivation is concerned. I just had my son a few months ago, and had put on a few pounds. It was hell trying to find the time to get to the gym. I finally found a gym on my way home from work, and have really gotten motivated over the last month, six days a week religiously.
I found a routine I could get into, and have only been progressing. Find something you can track, and witness progress, change it up, join a gym you haven't been to before. Last but not least, get a good routine going before the New Years crowd starts taking over.
Good luck!