Sudden loss of my Dad

I just loss my Dad in March. It was very unexpectedly. He was 67 still working strong man. He was at the casino with my mom ( having an amazing time). My mom he didn’t complain of anything. She was getting ready to go downstairs to play and all of a sudden he threw his body back on the bed closed his eyes and he was gone. They said it was a massive heart attack. We are very close family and it feel like the king of our kingdom is just gone. I feel so loss. My dad was everything to us. I feel terribly for my mom since she was there and had to perform CPR on him. They were together for 51 years. We also just loss our grandma in December as well. Just feel completely devastated and don’t know what the purpose of life is now:

 

I’m sorry for the loss of your father.