No action, such as trying to become 'not the doer',
trying to achieve oneness,
is in itself useful and it can even be detrimental.
These actions are only of use when the result is unity.
More likely they occur when unity is already the case:
"Ah, this is it! I sit!"
"I must sit and act what I am not."
You can check out Ta-Wan's other musings here.