The meaning of this sentence was that the world was so vast that you would definitely meet someone who was compatible with your heart and soul, so that you could let go of all your anger and uneasiness. It implies a kind of confidence and courage for the future, that no matter what difficulties and challenges we face, we will always find a solution to the problem and find the person who is connected to our hearts. This sentence often appeared in romance novels or movies to express that two people could finally come together to support each other and grow together after experiencing various setbacks.