Depending on where someone is in their life, turning 40 can either be a genuinely embraced milestone or viewed negatively and can result in a mid-life crisis. Either attitude is common and the people in the life of the person who is turning 40 usually find a way to celebrate more elaborately than other birthdays and need special 40th birthday party supplies. Sometimes, a significant other will plan a trip somewhere the person turning 40 has always wanted to visit. This is a kind gesture but more often, a party of some kind will be planned so that everyone in the person’s life is able to take part in the celebration.