Speaking angrily to others is ineffective. Losing your temper is a sign of weakness. The aggression that wins on the battlefield, in business, or in … - Jocko Willink

Even if you can't perform at a high level, showing up and doing something is still a thousand times better than not showing up at all.

People are not who you want them to be. Kill your idols. Sure there are things we can learn from people — but people aren’t going to be what you think they are — what they should be. People, even those people you have put up on a pedestal, are going to be faulted, weak, egomaniacal, condescending. They are going to be lazy, entitled, shortsighted. They will not be perfect. Far from it. That’s fine. Learn from their weaknesses. Of course: Learn from their strengths and mimic and copy them in what they do well. But equally as important: Learn from their faults.

When you make a decision to be better. When you make a decision to do more, to BE more. Self-discipline comes when you decide to make a mark on the world. If you don’t think you are disciplined: It is because you haven’t decided to be disciplined. YET.