When in doubt

I found this quote here.

In the name of the best within you, do not sacrifice this world to those who are its worst. In the name of the values that keep you alive, do not let your vision of man be distorted by the ugly, the cowardly, the mindless in those who have never achieved his title. Do not lose your knowledge that man’s proper estate is an upright posture, an intransigent mind and a step that travels unlimited roads. Do not let your fire go out, spark by irreplaceable spark, in the hopeless swamps of the approximate, the not-quite, the not-yet, the not-at-all. Do not let the hero in your soul perish, in lonely frustration for the life you deserved, but have never been able to reach. Check your road and the nature of your battle. The world you desired can be won, it exists, it is real, it is possible, it’s yours. - Ayn Rand

Another I like along the same lines is the following by Ralph Waldo Emerson:

The characteristic of heroism is its persistency. All men have wandering impulses, fits, and starts of generosity. But when you have chosen your part, abide by it, and do not weakly try to reconcile yourself with the world. The heroic cannot be the common, nor the common the heroic. Yet we have the weakness to expect the sympathy of people in those actions whose excellence is that they outrun sympathy, and appeal to a tardy justice. If you would serve your brother, because it is fit for you to serve him, do not take back your words when you find that prudent people do not commend you. Adhere to your own act, and congratulate yourself if you have done something strange and extravagant, and broken the monotony of a decorous age. It was a high counsel that I once heard given to a young person, -- "Always do what you are afraid to do." A simple, manly character need never make an apology, but should regard its past action with the calmness of Phocion, when he admitted that the event of the battle was happy, yet did not regret his dissuasion from the battle.