When you are steadfast in your abstention of thoughts of harm directed toward yourself and others, all living creatures will cease to feel fear in your presence.
PatanjaliWhen you are inspired by some great purpose, some extraordinary project, all your thoughts break their bonds.
PatanjaliThe obstacles that distract thought are disease, apathy, doubt, carelessness, indolence, dissipation, false vision, failure to attain a firm basis in yoga, and restlessness.
Patanjali