Heartache: Susan Boyle opens up about her depression and buylling

Susan Boyle has opened up about her battles with depression saying that school bullying made her life an "absolute hell."

"I can be up and down like a yo-yo," she said. "I can be depressed."

The Scottish singing sensation Susan Boyle says her depression goes back to the bullying she suffered at school.

"I know I'm taking a big chance telling people this but you have to be honest. I used to be made a fool of at school," she said.

"It was psychological bullying and that leaves a scar and it also cultivates a lot of anger. "When people are a wee bit slow others pick at them. My life was made absolute hell."

Susan, whose new album, "I Dreamed A Dream" is topping the charts around the world said she still suffers from bouts of anger and mood swings.