Every box jump involves a leap of faith. You’ll probably land on top of the box, on your feet, and not make it into one of those box jump fail compilation videos (seriously, do not Google). But how do you convince your brain and body that a solid landing awaits?

How we feel about our bodies - and how we treat them - is influenced by many different factors, but one of the biggest is how we were raised. As a longtime fat activist, I have heard tons of stories about well-meaning parents who'd talk about food choices in terms of weight loss rather than nutrition, or exercise as a moral imperative rather than a fun way to spend time. And their children grew up to develop harmful attitudes and behaviours because of it.

We all have something about ourselves that we're working on. Maybe you want to be more confident at work, or more positive. Or perhaps you're having trouble accepting your body image for the time being, or wish you could be more present and appreciative of everything you have and the world around you.

A while back, I met up with my pal Jenny Lawson, who was in town recording the audiobook version of her memoir, Let's Pretend This Never Happened. I asked her how it was going and she told me that it had been going horribly -- until, in a panic, she reached out to a writer friend of hers for advice.

We all know that being seen as confident, but not cocky, at work can have a positive effect on our careers. From one-on-one meeting with your boss to giving a presentation to the whole team, your voice is one of the most important parts of project confidence. Here's how to adjust your voice so that how you say something has as much impact as what you say.

Confidence seems like an elusive quality that some people just have and others don't. The truth is, anyone can work on and boost their confidence, but it doesn't happen overnight. This TED-Ed video explains where confidence comes from and three tips to feel more confident about yourself.

Sometimes finding your confidence is as simple as breaking the ice. The next time you're at a conference, party or other social event, try this game for a quick confidence boost.

Confidence is a vitally important personality trait, but you might worry that acting more confident could come off as arrogant. Fortunately, there are distinct indicators that distinguish the former from the latter.

Being able to boast about your accomplishments or abilities without making everyone around you roll their eyes is an art form. There's a time and place for it, and according to a recent study, there's even a right and wrong way to do it.

When you're planning a public speech, you have your notes, slides and script in the hopes that everything will go right. It won't. Something is going to go wrong and if you expect it, you'll handle it better.

Having confidence in your skills is essential to your success. Ego-driven bluster is less so. If you want to be confident but worry about becoming an egomaniac, focus on being objective.

"Power poses", or the idea that faking powerful body language reduces stress and improves your performance in a stressful situation, is a tip we've repeated several times. However, one of the lead researchers behind the idea has made a complete about-face, and so should we -- unless, of course, it works for you.

There's an insidious quirk to your brain that, if you let it, can drive you absolutely batty. Tell me if this sounds familiar to you: You get anxious about confronting somebody in your life. That anxiety cripples you and you start wondering why you're so anxious. Now you're becoming anxious about being anxious. Oh no! Doubly anxious! Now you're anxious about your anxiety, which is causing more anxiety. Quick, where's the whiskey?

Feeling like you don't measure up to those around you also makes you think you don't belong, like you're an impostor. A simple change in mindset can combat that feeling and remind you that we're all -- even your heroes -- human.

Few things can ruin a good run like turning a corner and facing a towering hill. You were making good time! You were flying along and everything felt great and the robot lady on your running app was whispering excellent numbers into your ear. Now that all comes to an end. You must trudge.

Starting on a big, important task first thing in the morning is sound advice for most people. But if you're a serious procrastinator, easing into the day with a few baby steps might be more effective.

In May of 2014, I wore my first costume to a convention. It was a simple Doctor Krieger from Archer. Stepping into the shoes of a character I liked just seemed like a fun way to spend the weekend. Instead, it turned into an exploration of what it means to be confident.

There will always be people who will try to bring you down without knowing any better. Treat them like toddlers, says author and entrepreneur Seth Godin: "Buy them a lollipop, smile and walk away."

Interviewing for a job over the phone can be just as stressful as interviewing in person. You can prepare yourself mentally and get in a good mindset by dressing up like they will be right there in the room with you.