What If 'a' means success in life then a=x+y+z where work is x, play is y and z is keeping your mouth shut.

Answer 1

then every day I recommend you work 8 hours, play 8 hours and sleep 8 hours (but be sure to sleep with your mouth closed).
Of course you could maximize "a" just as well by doing only one of the three 24 hours a day but people who try that tend to not live as many days as people who balance things out.

Answer 2

successful people type in their computers

Answer 3

x = efforts
y = relaxation
z =do your karmas : trust in god : results in his hands

Balanced dose of all three will lead you to

Answer 4

I can never be a as I can not do z