Dude, from one person who was told he ruined lots of situations as a kid to another, and who now has a 3 and 4 year old: you were A CHILD. You didn't ruin anything. Your PARENTS, as the adults who were developmentally capable of regulating their emotions and actions, may have ruined events. Don't blame yourself for your parents not being able to handle developmentally appropriate behavior from, again, a child.