Challenge is the pathway to engagement and progress in our lives. But not all challenges are created equal. Some challenges make us feel alive, engaged, connected, and fulfilled. Others simply overwhelm us. Knowing the difference as you set bigger and bolder challenges for yourself is critical to your sanity, success, and satisfaction.

Your success depends mainly upon what you think of yourself and whether you believe in yourself.

For true success ask yourself these four questions: Why? Why not? Why not me? Why not now?

Success has nothing to do with what you gain in life or accomplish for yourself. It's what you do for others.

One measure of your success will be the degree to which you build up others who work with you. While building up others, you will build up yourself.

Before you are a leader, success is all about growing yourself. When you become a leader, success is all about growing others.

Success is a state of mind. If you want success, start thinking of yourself as a success.

To be successful you have to be lucky, or a little mad, or very talented, or find yourself in a rapid growth field.

The opponents and I are really one. My strength and skills only half of the equation. The other half is theirs. An opponent is someone whose strength joined to yours creates a certain result.

The mask can be a limitation, but you just deal with it. You do get superhuman strength and pumpkin bombs and all this other stuff to express yourself with.'

The feeling between two fighters is profound. We go places where normal people don't go. You smell a man's blood, it smells like rust. You get into a clench, you feel his strength, you feel his desperation, he feels yours. You're sharing this.

What gives you strength at any circumstance is your understanding of yourself.

In those long, lonely miles you put in during the off-season, and in those knife-in-the-gut track repetitions and hill repeats that buckle your knees - at that moment in almost every race when you ask yourself how much you're willing to hurt to catch one more runner - you can draw strength and inspiration from your running mates.

Your identity is firmly anchored in Christ's accomplishment, not yours; his strength, not yours; his performance, not yours; his victory, not yours.

We live in a world where to admit anything negative about yourself is seen as a weakness, when it's actually a strength. It's not a weak move to say, 'I need help.' In the long run, it's way better, because you have to fix it.

People talk about great motivators, but I think motivation has to come from within the individual first, because if you haven't got that inner strength yourself, and belief and you want to do well, it doesn't matter what anybody else says. You have to have that; it has to be inbuilt.

You really have to look inside yourself and find your own inner strength, and say, 'I'm proud of what I am and who I am, and I'm just going to be myself.'

Strength training is a fantastic microcosm for a man's life: pushing yourself through discomfort, every single day, is the only way to make measurable progress. It's one of the few ways to grow as a man.

You had no right to be born; for you make no use of life. Instead of living for, in, and with yourself, as a reasonable being ought, you seek only to fasten your feebleness on some other person's strength.

Believing in yourself and having confidence gives you outer strength.

I played a lot of sports when I was a kid so I get in that ballgame mindset of being really, really respectful, but at same time saying to yourself, 'Don't back down a single inch, hang with these guys if you can.' If they throw it high and tight you have to stand in there, you can't take yourself out of that moment.

If your man is a sports enthusiast, you may have to resign yourself to his spouting off in a monotone on a prize fight, football game or pennant race.

The great thing about sports is you constantly have to prove yourself. You constantly have to go out there and do it, day in and day out.

Don't sell yourself short because without that you can't go far in life because after sports the only thing you know is sports and you can't do anything else with that.