If you can solve your problem, what is the need of worrying? If you cannot solve it, what is the use of worrying.
ShantidevaAll those who are unhappy in the world are so as a result of their desire for their own happiness. All those who are happy in the world are so as a result of their desire for the happiness of others.
ShantidevaIt is not possible to control all external events; But, if I simply control my mind what need is there to control other things?
Shantideva