Kim Cattrall "will never be the same" following her brother's suicide in 2018

She shared: "I am different now and I will never be the same."

Kim confessed she was completely unprepared to deal with her brother's death, even though he was dealing with depression at the time.

She told the Mail on Sunday newspaper: "No one can prepare you. He was suffering from depression but depression is a curious thing and it can be impossible to detect if someone does not want you to know.

"And so I didn't know. We [her family] didn't know. And when you lose someone to suicide there is always the question, 'If I could only have, if I did only, if I was only...' and it haunts you. And you have to learn to live with those endless questions, the endless guilt, the endless frustration every day because you are in a new reality and there is nothing you can do to change it."

The actress also admitted to experiencing a whole range of emotions in the aftermath of her brother's death, saying her mood would change on a day-to-day basis.

She explained: "It breaks you. It is so hard.

"There is a whole process for you and everyone around you of picking yourself up every day, going from a bad day to having a better day and then going back again. And it goes on."