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.
As a camel beareth labour, and heat, and hunger, and thirst, through deserts of sand, and fainteth not; so the fortitude of a man shall sustain him through all perils.
Under the influence of false ego one thinks himself to be the doer of activities, while in reality all activities are carried out by nature as a natural process.
All anger is about something which has already happened. Is it of any use getting angry about something which you cannot alter?
Your emotions are your inner guidance system. They alone will let you know whether you are living in an environment of biochemical health or of biochemical distress.
