It is impossible for you to be angry and laugh at the same time. Anger and laughter are mutually exclusive and you have the power to choose either.
It is the Path of the Good Mind which Thou hast manifested to me, O Ahura! Whereby the welldoers, in accordance with the teaching of the Spiritual Guides, acting in harmony with Truth alone, Shall pass onward to the assigned reward of which Thou art the bestower, O Mazda! This precious reward of Thine, O Mazda, Thou givest by way of the Good Mind, Thou givest to those who perform actions through knowledge and pure thought; who attempt for the progress and development of the world; fulfil God’s desire and try for the progress of God’s Will through truth and righteousness.
There are always difficulties arising which tempt you to believe that your critics are right. To map out a course of action and follow it to an end requires courage.

