It's been four months since Robin Williams' tragic suicide and the late actor's son Zak Williams says it's still difficult coping with his unexpected passing.
"I miss him all the time," Zak, 31, tells People. "Often I see something or if I'm watching a film, I think 'Oh, man, he would have appreciated this' or 'He would have gotten a laugh out of this.'"
Speaking for himself and Robin's other two children, Zelda, 25, and Cody, 23, Zak adds, "There's not a day that goes by that we don't think about our dad. The key thing is just to take things a step at a time. I know it sounds a little clichéd, but really focusing on what's in front of you, focusing on your well-being and then trying to fill our hearts so we can be there for others is really important."
Zak isn't the only one who's still mourning the legendary comedian's death. Some of Robin's friends and co-stars are also speaking out about their love for him.
Robin's Night at the Museum co-star Ben Stiller tells People, "I remember when the first movie happened, and [director] Shawn [Levy] said he wanted to ask Robin to play Teddy Roosevelt. I was like, ‘That's the most brilliant idea in the world. We can't do the movie if he doesn't say yes.'"
"He was an amazing performer—an icon before I met him, then a friend," Night at the Museum: Secret of the Tomb's Ricky Gervais adds. "I haven't met anyone who has a bad word to say about him. He was just a lovely, generous, sweet man."