Thru knowing how to,

-----we can be expressing in 9 ways, nava rasas,

still ,undisturbed, 
not wasting energy, 
not shattering nerves,
still, accomplishing the best quality , quantity of work

that's the art of doing, yogastha kuru karmani
that's the skill in doing, yoga karma sukaushalam

nothing to suppress
but to freely express