Actress Vidya Balan, who has always wowed the audience with her power-packed performances and strong roles, has opened up about how each character she has portrayed till now has educated and changed something for her.

Ever since she made her Bollywood debut with "Parineeta" in 2005, Vidya has treated fans with her dynamic portrayals in films such as "Bhool Bhulaiyaa", "No One Killed Jessica", "The Dirty Picture", "Paa", "Kahaani", "Ishqiya", "Mission Mangal", "Tumhari Sulu" and "Shakuntala Devi".