United Kingdom, May 6 -- Matthew McConaughey fled to Peru to fight his "demons" after finding fame.

The Interstellar actor took a three-week solo trip to South America, where he went by the name 'Mateo', after questioning what was "real" in his life and eventually found peace after locking himself away with nothing but his journals, water, steak and tequila.

Speaking on the No Magic Pill podcast, he said: "[After finding fame, I thought] 'No strangers do I meet anymore.the world is a mirror.'

"I was questioning. which part's real and which part's bulls***...

"Went to a place that had no electricity in the middle of the desert where I was locked in with nothing but me and who I've been in my past or my diaries.

"Where the demons on ou...