Valentina Karoleva is a Bulgarian actress. She is best known for her leading role in Yana Titova's "A Dose of Happiness," which tells the true story of her mother, Vesela Toteva. Valentina Karoleva is a Bulgarian actress. She is best known for her leading role in Yana Titova's "A Dose of Happiness," which tells the true story of her mother, Vesela Toteva.