20 yrs ago my husband of 18 years told me that he was leaving me for another woman and ta few, short months later I found out my mom was dying. I had mom to care for and my sons to raise so the grief and emptiness fell upon me in great, smashing waves in between my responsibilities. I had to focus on my kids, though. 9 years ago my dog died and my youngest, 21 at the time, moved out within a week's time. I can't say it was worse in terms of pain but the feeling of sadness and loss was more pervasive in my daily life and thoughts.
The losses seem to compound and I felt alone and stripped of what used to define me the most. That constant emptiness was what got to me. Love my kids the same, of course, but got along the best with the youngest. Loved, loved, loved having his energy and sweet face around the house. That, and the fact that he was the last one to go, made it harder to cope with for awhile.
Over time, it just gradually felt more natural to have them visit and at some point it became fun and exciting to get into new things. I literally had to reach back and remember that I was an individual on my own with dreams and interests before being a wife or mom. I actually feel better now than ever because I'm retired, I get to decide what I want to do every single day, and I get to have my lovely sons and their wives and girlfriends around whenever it works for everyone. As I said, it just took a bit of time.
Giving you a big hug from the US!