Studies have shown time and again that pretty people have an advantage over ugly people. Most human beings harbor generally superficial tendencies, which is why so many of us respond to marketing that features attractive models and celebrities. Attractive people are more likely to become leaders, make more pay, get better opportunities, and attract other attractive people as mates.

But beauty is not the only thing that makes people attractive. There are many people out there with slightly better than average looks who are a magnet for adoration. Think hard about the attractive people you know. You'll find that most aren't movie star material and you likely know some who are beautiful on the outside but not so attractive once you get to know them.

Incredibly attractive people make it their business to stay attractive regardless of how life shines upon them. Here's how they do it, along with suggestions how you can be more attractive as well.

1. They smile ... a lot.

Incredibly attractive people love life, all aspects of it. They thrill to challenges as much as they enjoy the rewards of success. They make the most of every minute and live in the moment. They are not afraid to share their joy in their movements and on their face. Feeling unattractive? Try finding the little joys in your day and express each positive notion with a big smile. Soon people will wonder what's causing your happiness and want to join you.

2. They dress to kill.

Dressing well doesn't require a lot of money, but it does require a bit of thought and attention. Incredibly attractive people are fashion conscious not because of vanity but because they know that clothing can set the right mood and tone. They know when to dress it up or take it casual to fit their environment. You can feel a bit more together by studying up on a few fashion blogs or going shopping with a friend with good taste. Wear fashion proudly and people will notice.

3. They are careful about what comes out of their mouths.

Nothing makes pretty people ugly faster than stupid things they say. Incredibly attractive people know that you don't have to be the smartest person in the room to maintain interest, but demonstrating your ignorance is sure to push people away. Mystery and attraction go together. Given the opportunity, say enough to pique interest and always leave people wanting more of your brain.

4. They are careful about what goes into their mouths.

Not everyone can be skinny, and people of all shapes and sizes are widely considered beautiful, but incredibly attractive people manage their bodies. How and what they eat matters to others because food is an important part of the social construct. Bad habits such as gum, cigarettes, and too much alcohol can knock attractiveness down quickly, even though people won't say anything. Don't let over indulgence and poor choices get in the way of the respect people should have for you.

5. They listen.

Many people are preoccupied with themselves and what's on their own mind. So when someone genuinely shows interest in another and listens, she immediately strengthens her connection with that person. I have personally become closer with an acquaintance through sharing an important story. Incredibly attractive people have mastered the art of listening. Try doubling your personal listening-to-talking ratio for a week and enjoy the noticeable difference.

6. They learn.

There is no question that smart is sexy and ignorance is ugly. Incredibly attractive people know you don't have to be a brainiac to maintain admiration, but it helps to be aware of current events and develop your mind. Dedicate an hour a day to making yourself smarter and watch a whole new class of people join you in discussion.

7. They take care of themselves.

It's difficult to be around people who neglect themselves. It's often a clear sign of low self-esteem. Incredibly attractive people hold themselves in high regard. They are strong in self-confidence and care about their bodies. They enjoy life and want to be around for as long as possible. Make your own body a priority. You don't have to be a perfect specimen, but good hygiene and maintenance go a long way to show people that you matter.

8. They take care of others.

A generous spirit is a huge attractor. Incredibly attractive people know that selfishness is ugliest when it's on the physically fortunate. There is something magical about genuine altruism. Give of yourself freely and the universe will embrace you and shower you with love.

9. They make others feel attractive as well.

I'm not an ugly guy but I certainly won't make the list for People magazine's Sexiest Men Alive this year. Still, when I am with incredibly attractive people I don't feel deficient. I feel like a part of the glitterati because of the way they treat me and include me in their happiness and joy of life. Each person you meet brings something special to your world. Make sure you enhance theirs with the best you have to offer.