Why be unhappy about something if it can be remedied? And what is the use of being unhappy about something if it cannot be remedied?
ShantidevaThe hostile multitudes are vast as spaceWhat chance is there that all should be subdued? Let but this angry mind be overthrownAnd every foe is then and there destroyed
ShantidevaMay I become at all times, both now and forever: a protector for those without protection; a guide for those who have lost their way; a ship for those with oceans to cross; a bridge for those with rivers to cross; a sanctuary for those in danger; a lamp for those without light; a place of refuge for those who lack shelter; and a servant to all in need.
Shantideva