If the problem can be solved why worry? If the problem cannot be solved worrying will do you no good.
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?
We are all slaves of our own actions. Why be angry with anyone else?
The renunciation of doing harm is the perfection of discipline
All that may be wished for, will by nature fade to nothing.
Passion is overcome only by him who has won through stillness of spirit the perfect vision; it comes through the contentment that is regardless of the world.