What skills did you have to learn as an adult that you wished you were taught in school?

Lifehacker‘s got the list, including:

• Basic car maintenance
• The cost of home ownership and mortgages
• How insurance works
• The art of conversation
• Basic cooking skills
• The art of haggling and negotiation
• How to spot a scam
• How to build your credit
• What to do in an emergency
• Time management

What would you add to the list?