One version of Murphy’s Law says: If anything can go wrong, it will go wrong. If you’ve stepped on bubble gum, or if you’ve ever dropped an ice cream cone, you learned Murphy’s Law.
Crying over dropped ice cream does not help you. Laughing at your mistakes helps you feel better. Try to learn from your mistakes and be more careful. But being careful does not always work. Understanding Murphy’s Law can be helpful to you and others.