When you're out at a club or even in the office cafeteria, who do you think people notice first: the guy who is standing tall and straight or the guy who looks like he wants to crawl into his shell? Well, people may notice the guy who's slouching and looks all curved, but for all of the wrong reasons.
It's amazing how something as simple as good posture can make someone look tall, slim and, most importantly, confident. And the confident man is the one who gets noticed for all of the right reasons. So, learn how to get your spine untangled and stand up straight for goodness sake.

Learning how to improve your posture consists of knowing how to do it, and having the willpower to stick to it.

When we were young, we were told to walk with a book on top of our heads to practice good posture. But now posture starts with three activities we do every day: sitting, standing and sleeping.

Stand up straight
Stand up and look in a mirror. Check out which areas are preventing you from standing up straight. Are your shoulders slouched forward? Is your head down? Is your back bent? Straighten out whatever is slouching and observe the difference.
Your ears, shoulders, hips, knees, and ankles should make one straight line. Relax your shoulders and slightly bend your knees — you don't want to look like a robot. If you're standing for a long period of time, make sure to continue shifting your weight every so often.

If you're bending down to pick up something, bend your knees and hips; don't bend down and grab the object with just your waist.

Sit back, relax
The next step in how to improve your posture is to use a high, firm chair with a high back. Make sure to sit with your hips as far back against the back of the chair as possible, and keep your knees at hip level (or a little lower).
If your back is not getting the support it needs from the back of the chair, or you find it difficult to stay against the back of the chair, then try placing a pillow or a towel to support your lower back.