Sean Ono Lennon was surrounded by "cosmic woo-woo stuff" as a child

Speaking to PEOPLE, Sean joked: "She is deeply into cosmic things, to a level that I've never seen in anyone else. You could argue that she's a good witch.

"I was raised with so much cosmic woo-woo stuff that I rebelled against it. I was more interested in science and rational thinking.

"Growing up, it just felt like everything always had to be about numbers and calculating dates for astrology. [I'd say] 'Mom, can we just do something without worrying about what the tarot cards say!'"

Despite this, Sean still feels pulled towards the mystical.

He explained: "No matter how much I try to reject what I would call supernatural thinking - or superstitious thinking - I can't get it out of my being. I still worry when there are coincidences or if I see the 'wrong' number on a hotel room.

"No matter how rational I pretend to be, I still have it in me. Maybe it's genetic, or maybe it's just because I was raised that way. But the truth is, I secretly do kind of believe all that stuff might be real."

Sean has actually become more appreciative of his mom over time.

He shared: "A lot of what I realised over time was how very right she was about so many things when I was growing up. I think when you're a kid, you resent your parents for so many little things. And as you get older, you learn (if you're lucky) to appreciate them more."