The phrase "valuable lessons" refers to important and useful pieces of information or knowledge that can be learned from a particular experience, situation, or person. These lessons often involve insights into how things work, what is right or wrong, or how to behave in certain situations. They are typically gained through trial and error, observation, or instruction, and they provide guidance for future actions or decisions. In essence, valuable lessons help individuals make better choices by providing them with a deeper understanding of the world around them.