One doesn't need to worry about acheiving an altered state of total objectivity, before acting. That is like religious mysticism. Instead we are to be subject to the truth, as we may ascertain it. (All truth is God's truth.)
As long as we don't arrive at the "truth" before we take the journey, or arrive there by a process of willful ignorance of anything that might lead in a direction we didn't intend to go.