From: Runner's World
How to put together your perfect phrase
Keep it short
Your mantra should be an affirmation, not a novel. "When you're tired, you don't want something elaborate," says Stephen Walker. "It's too hard to remember." Keep it to five seconds or less.
Think of the problem you're trying to counteract and turn it around. "If you're feeling weak, your mantra should be I am strong," says Walker.
Make it energetic
Your mantra should center on action verbs or strong adjectives, not abstract phrases, says Robert J. Bell. Look for words that convey energy, like "fast," "strong," or "power."
Use the mantra to remind yourself what you plan to do or how you want to feel as you're running, says Walker. Now is the time; go for it. Or, Run relaxed. Finish strong.
BUILD IT, BELIEVE IT, BECOME IT
Choose one word from each section below to create a motivational, get-it-done power chant.