Another thing that came to my mind is "excel yourself" that is often phrased in martial arts. As most people understand that to their own way, here is what I think of it.
For me, the very essence of taekwondo is to excel yourself. Overcome the battle between your will and your body. And the occasions to do it is every time you feel tired and your body says "oh that's enough". Push it and do more. When you realize the power of will, or the trickness of your mind, you can really excel yourself. Here is one common practise I sometimes make for our higher belt students:
I just say "start making pushups". Not a word about repetitions or time. Just make them. Usually everyone is hyped up and starts doing them with good motivation. But then they get tired. It's always interesting to see how people react when they feel the first wave of tireness. Some give up right away, some slow down, and some might even push forward even harder. It tells a lot about their naturall "will to fight". Or the ability to excel themselves. So sooner or later they all tire up. When someone stops and says "I can't do anymore" and they are still in the pushup position, I rush in and say in loud voice "Come on, do one more! You can do it!" Then they make one more. If that looks easy, I might yell even harder "That's the spirit, come on make another! Fight for it!". And they do it. For some, this seems just standard.
But the lesson is that he was giving up, and said he can't do them anymore. And then he made one, two or even more. So instead of being absolutely not capable of doing another one, he felt and believed it. There is a huge difference between not being able, or believing not being able. People can do impressive things, if they truly believe in themselves.
I have said to my students, that if you can look in the mirror after a training session and say to yourself "today I didn't give up at any point" and truly believe that, it's one hell of an achievement. It sounds a lot easier than it is.
Let's get back to this a little later, here is one cool martial arts story:
After a training session teacher gathered the students around him, and asked "what would you do if you find out that you have 24 hours to live?". Firstly students said common things "I would take a big loan and spend it to all fun stuff", "I would get booze, drugs and girls" and the usual stuff. But then as they thought about it, they got little more serious. Some would spend the last day with family, some might call to a cousin they haven't met in years, some would call to his brother whom they hadn't spoken in years after some fight etc.
Then the teacher told them that ancient samurai's knew they could die in battle any given day, at any given moment. They accepted it, and they lived their every day like it was their last. That way, when they died, they wouldn't have any unfinished things haunting them. So if someone would call a cousin, why not call him right away? If you haven't spoke to your brother in years, why not make it up right now?
Of course we are not (at least not the most of us) samurai's, and we don't have to prepare ourself for everyday dying, the story is a nice reminder to us. "Live every day like it's your last" is a good motto, if put into right perspective. It means that if you think "I really should call my mother someday", don't wait. Do it know. Cos bad things can happen. And if something terrible happens to you or her, you would feel bad as you haven't called her for some time. Don't wait, do it now.
So back to exceling yourself in trainings. If you do every repetition like it's the last one. Or the only repetition you will do that day, you are on your way to excellence. If you are supposed to make 10 kicking drills, do you do 5 great ones, 3 good, and last two are little lazy as you got tired? Or do you treat every drill like it's the only drill that day, and you want to make it as good as possible? Later one is the way to go, but it's hard. You can't just decide that "today I am going to excel myself and make every repetition and drill with 100% commitment". If you have our normal 90 minute taekwondo lesson, it helds about 200 kicks/punches, and a shitload of other techniques and stuff. To excell yourself in all of those requires a lot of practise. So start with smaller goals. If you have that 10 drill exercise, try to do that with excellence.
The key to treat every repetition like it's the most important thing in the world is focus. And it takes practise to be able to point your full focus to something quickly. You can't keep 100% focus for 90 minutes, so you need to give it a rest. And it takes practise too. We do exercise it, as it improves the quality of one's technique a lot. Here is the exercise:
Do one kick to pad. But before doing it, put all your focus to that pad and the kick. Shut everything in thos whole universe outside of those two. The only thing that matters to you at this very moment is that pad, and the kick you are going to do. And then execute it. After that, release your focus. Let your mind go free for few seconds, and then start to focus for the next one. And repeat the thing.
Sooner or later you will learn to direct your focus rapidly, and also relax your mind rapidly. I have found that this skill benefits me a lot in my work. It's very stressing work sometimes, and there isn't a possibility to get a break. I am talking about kindergarten. Lot's of noise, lot's of fuzz, lot's of things to be aware of. When I was working in the warehouse, I could always take a short break and just not think about the work for few minutes. But in kindergarten, it's not usually possible. I can't just leave the kids and go to a coffee. Some days are more stressing than others. And when it's very stressing day, I find that I can relax my nerves and mind if I get a small breather. Some of my colleagues aren't capable of this and they can be very stressed out after a day or longer period of time.
Now look that that wall of text! It got a lot bigger than I expected. Wow.