1. Voice

"Research that looked at U.S. presidential candidates between 1960 and 2000 found that in all eight elections, the candidate with the lower voice had won the popular vote."

So maybe you don't sound like Barry White. How can you improve the way you speak?

Via The Charisma Myth: How Anyone Can Master the Art and Science of Personal Magnetism:

Speak slowly. Visualize the contrast between a nervous, squeaky teenager speaking at high speed and the slow, emphatic tone of a judge delivering a verdict.

Pause. People who broadcast confidence often pause while speaking. They will pause for a second or two between sentences or even in the middle of a sentence. This conveys the feeling that they're so confident in their power, they trust that people won't interrupt.

Drop intonation. You know how a voice rises at the end of a question? Just reread the last sentence and hear your voice go up at the end. Now imagine an assertion: a judge saying "This case is closed." Feel how the intonation of the word closed drops. Lowering the intonation of your voice at the end of a sentence broadcasts power. When you want to sound superconfident, you can even lower your intonation midsentence.

Check your breathing. Make sure you're breathing deeply into your belly and inhale and exhale through your nose rather than your mouth. Breathing through your mouth can make you sound breathless and anxious.

Want your voice to to convey more warmth? Just smile:

There's only one thing you need to do in order to project more warmth in your voice: smile. Smiling affects how we speak to such an extent that listeners in one study could identify sixteen different kinds of smiles based on sound alone. This is why it's worth smiling even when on the phone.

this voice advice also applies to how to discipline a child effectively!

Same principles at play: How to get people to listen to you.

ever hear parents doing that high-pitched whining at their children?  it's easy to do, especially when frustrated, but that's where the breathing comes in.  you gotta check yourself!

Check Yourself before you wreck yourself, like Ice Cube!

that's it!

Checking yourself is a form of expressing yourself.

great song.

...which is over 25 years old!

http://en.wikipedia.org/wiki/Express_Yourself_(N.W.A_song)

that song is noticeably clean!  funny, it has a say-no-to-drugs message—particularly against weed—and then his next album was the chronic!