Rita Ora feels like she's ''losing the plot''.

The 24-year-old singer revealed she always feels like she's on the brink of going mad but insisted she hasn't had a breakdown in over two years.

She said: ''I always feel like I'm losing the plot. But I think two years ago in Miami was the last time I really lost it. I was just having a photo shoot and I was really tired because I hadn't slept for about three days and I got sort of delirious and then I collapsed because it was all just getting too much.''

However, the 'Poison' hitmaker doesn't let negative feelings get to her and instead believes she has the ability to ''conquer the world''.

Asked what she thinks about before she goes to sleep, she explained: ''How I can conquer the world in the morning. How am I going to go about that? If I tell you, then my secret's out, so you're just going to have to let me conquer it!''

Meanwhile, the musician recently made a foray into acting in 'Fifty Shades of Grey' and 'Southpaw', admitting her role in the latter was simple because she thought about the area in which she grew up in London.

Speaking about pretending to be a drug addict in the movie, she told Q magazine: ''It was actually really simple. I walked on set and the make-up and clothes team were like, 'Oh yeah, you're ready'. And I said, 'But I haven't gone to hair and make-up yet'. So, basically, they already thought I looked like a crack addict, which made me laugh! How did I get into character? Well, I grew up in Ladbroke Grove where there was a bit of that so I kind of already knew the drill. Have I ever taken drugs myself? No.''