Know how and how much to tip people who expect gratuities, even in the case of poor service.

Be able to live alone, even if you don't want to and think you will never find it necessary.

I believe that one becomes stronger emotionally by taking life less personally. If your employer criticizes your report, don't take it personally. Instead, find out what's needed and fix it. If your girlfriend laughs at your tie, don't take it personally. Find another tie or find another girlfriend.

Be able to correctly pronounce the words you would like to speak and have excellent spoken grammar.

Know the names of past and current artists who are most famous for playing their instruments.

Success may be the ability to be happy with whatever we're stuck with.

You can't be wise without being intelligent, but you certainly can be intelligent without being wise.