"Hold yourself responsible for a higher standard than anybody else expects of you. Never excuse yourself. Never pity yourself. Be a hard master to yourself - and be lenient to everybody else." Henry Ward Beecher
The last line is the most difficult lesson of all. When you are a person who expects much out of yourself, you tend to expect the same out of others. I've learned that to be an ineffective way to go about working with those who don't share the same fire.
Everyone has different temperaments. No matter how much you wish someone would become as motivated as you, it's impossible to inspire them through any type of brash encouragement. It's frustrating. You may see potential in someone who just doesn't seem to care. You may need someone to step up and they have no desire to do so. You may know someone who constantly tells you they're going to do something, but never do.
The best way to inspire others is to continue to do what the beginning of the quote says, "hold yourself responsible for a higher standard, never excuse yourself, never pity yourself, and be a hard master on yourself." It's called intentional influence. It's having empathy, providing positive encouragement when needed, being humble in your achievements and continuing to set the highest standards for yourself.