Los Angeles: Singer Katy Perry says she needs to be resilient to get through the levels of life. “To get through the levels of life, you have to be resilient. I think sometimes when you say that, ‘You are resilient’, when you verbalise it, when you give it energy, is when you actually become resilient,” Perry said during the behind-the-scenes look at a recent soft drink campaign, reports femalefirst.co.uk.