The singer, who shot to fame with 'X Factor', says it has not been an easy ride but it helped her grow as a person, the Independent reported.
"I've met some deplorable people over the past six years, who have done some really bad things, and I've seen their betrayal of my trust unfold before my eyes.
"But I've learned from it and grown from it and I'm much better now at knowing who I should avoid," Lewis said.