No te dejes apartar de tu deber por cualquier reflexión vana que de ti pueda hacer el mundo necio, porque en tu poder no están sus censuras, y, por c… - Epictetus

Destroy desire completely for the present. For if you desire anything which is not in our power, you must be unfortunate

Men are disturbed not by things, but by the views which they take of things. Thus death is nothing terrible, else it would have appeared so to Socrates. But the terror consists in our notion of death, that it is terrible. When, therefore, we are hindered, or disturbed, or grieved let us never impute it to others, but to ourselves; that is, to our own views. It is the action of an uninstructed person to reproach others for his own misfortunes; of one entering upon instruction, to reproach himself; and of one perfectly instructed, to reproach neither others or himself.

Put away the fear of death, and however much thunder and lightning you have to face, you will find the mind capable of remaining calm and composed regardless.