How to get over my father's death if I keep hearing his voice randomly.

I’m living my life. I’ve been dealing with depression for about a year now, but I can say it’s not really affecting me on the surface. Still, every time I laugh, smile, or do anything, I hear him calling me, asking me to help him.

He had a lot of serious health issues—one of them was brain cancer—which made him forget many things. Sometimes, I wouldn’t respond to him, or I’d just say I was busy, and now that makes me feel even worse when I remember it.

Nowadays, whenever I feel anything—good or bad—or even when I smile or laugh, I hear his sick voice saying, “Come here, Ahmed. I’m your father, your beloved. You know no one loves you as much as I do.”

I feel totally numb, but whenever I get even a glimpse of emotion, it’s just guilt and sadness.

pls upvote so I can post on an anime sub