Whatever happens, I will not let my cheerfulness be disturbed. Being unhappy won't get me anywhere and will dissipate all my goodness. Why be unhappy about something if you can change it? And if you can't, how will being unhappy help?
ShantidevaDeath will be so quick to swoop on you; Gather merit till that moment comes! Wait till then to banish laziness? Then there'll be no time, what will you do? "This I have not done. And this I'm only starting. And this - I'm only halfway through ..." Then is the sudden coming of the Lord of Death, And oh, the thought 'Alas, I'm finished.'
ShantidevaThose desiring to escape from suffering hasten right toward suffering. With the very desire for happiness, out of delusion they destroy their own happiness as if it were an enemy
Shantideva