What is a one-sentence summary of the following article?
. Adorable people can always be found helping others, whether you're helping an old lady cross the street, helping your little brother with his homework, or helping a puppy find a new home. Look out for opportunities where you can help people, whether they are people you know or strangers in need of help. When you're talking to one of your friends and it obviously seems like he has a problem, then you should offer to help even if he hasn't asked you for it. This doesn't mean that you should get taken advantage of by always helping your friends and getting nothing back. If you help your friends, then they should help you. If you volunteer your time, then the universe will get you back. Being youthful is different from acting young or being completely immature. It just means that you shouldn't be world-weary, or look so tired and downtrodden that you've forgotten the fun, playful person you were as a child. Remember what it was like to have fun all the time, to be fascinated by the world, and to seize new opportunities. Laugh at corny jokes, try a dance class, or just chase your best friends around a park. You can be wise while still choosing to be young at heart. Youthful people don't complain about having to walk or to do something they don't want to do; they're too busy being in awe of life to slow down to complain. Adorable people always know when to say "please" and "thank you" and keep everything upbeat and positive. They are always polite, respectful to their elders and people in the service industry, and they hold doors for people and avoid burping or belching in public. They put napkins on their laps before they eat, know how to be kind over the telephone, and clean up after themselves. If you want to be adorable, then you definitely have to hone your manners. Adorable people are also very sweet. Being sweet means being kind, joyful, and generally gracious to others. If you're sweet, then you want to make other people feel loved and special, and to show people that you really care about them, even if you're just getting to know each other. This shouldn't be faked or forced, and you shouldn't be sweet one minute only to be mean behind someone's back the next second. Being sweet takes practice, but you can learn to show love for people if you work on it. . Adorable people are playful because they're curious about life and love exploring things. They like kicking a soccer ball around a beach, they like getting piggyback rides, and they like teasing their friends and having a good time. If you want to be playful, then you have to be open to new things, not be afraid to look at the world like a kid, and to find new uses for old things. If you want to be adorable, then being playful will help you keep up your sweet, fun image.

Summary:
Be helpful Be youthful. Have good manners. Be sweet. Be playful