For, owners of their deeds (karma) are the beings, heirs of their deeds; their deeds are the womb from which they sprang; with their deeds they are bound up; their deeds are their refuge. Whatever deeds they do-good or evil-of such they will be the heirs. And wherever the beings spring into existence, there their deeds will ripen; and wherever their deeds ripen, there they will earn the fruits of those deeds, be it in this life, or be it in the next life, or be it in any other future life.
Effortlessness means not doing anything, inactivity - AKARMA. Effort means doing much, activity - KARMA. Both have to be there. Do much, but don`t be a doer - then you achieve both. Move in the world, but don`t be a part of it. Live in the world, but don`t let the world live in you. Then the contradiction has been absorbed. Then you are not rejecting anything, not denying anything. Then the whole God has been accepted.