Emilia Clarke has sleepless nights thinking about Game of Thrones

Emilia Clarke has admitted she struggles to sleep at night because she is constantly thinking she will ruin the final season of 'Game of Thrones'.

The 30-year-old actress has starred as Daenerys Targaryen in the hit HBO show since season one and the penultimate seventh season is coming to an end, but Emilia has admitted she is worried viewers will criticise her performance, despite getting reassurance from her pals.

Speaking to Elle Australia, the actress said: "Oh God, I get sleepless nights over it. 'Oh you're gonna mess it up. It's the last season and it's going to go wrong'.

"My mates are like 'it's you - you and Daenerys are one and the same now. You need to trust your instincts'. And I'm like 'no, I've got to do more research'.

"The higher everyone places the mantel, the bigger the fall. That sounds awful, but it's true. I don't want to disappoint anyone, basically."

Season seven of the show is set to come to a dramatic finish next week.