Ileana D’Cruz says the unknown challenges her to do better

"I think in most films that I have done I constantly question how I will do it, and that is what pushes me forward because I think if I walked into a film completely cocky and confident, I wouldn't be really able to do justice in a way," Ileana told IANS.

Ileana, who was recently seen in the digitally released film "The Big Bull" says she likes uncertainty.