My condolences to you and your family, Augie.
My dad had a real hard time when my mom passed away almost 19 years ago. I checked up on him every day for probably 6 weeks or so. Well, I think he called me more than I called him.

But he had a real difficult time since he just retired a couple months prior. Not sure what happened but one day, the black cloud that was over his head just lifted or it was slowly lifting over time. My dad had to learn how to do things around the house since my mom did most of the household stuff and that took his mind off of it. He also did some things like gardening and took a couple of part time jobs just to get out of the house. It will get better for you over time, I'm sure. Not sure how long that will take but lean on your friends and family as much as you can and they will support you through this.
Agree with Spaulding, please don't drink. One of my dad's best friends from when he was a kid drank a 750 mL bottle of whisky every day after his wife passed away. He was one of the greatest, nicest guys you'd ever want to meet and then he just turned into an asshole and finally, he killed himself with his drinking. Unfortunately, the memories I have of this guy are when he was drinking. I wish I could dump that from my head but I cannot. So, yeah, please don't be like my dad's friend.
Once again, condolences to your family.