Words are powerful, they can focus the brain and they can drive action. The words in this question are very deliberate and help to create focus and action. The words “most powerful” help to focus our energy on what can have the greatest impact. Also, the word “powerful” suggests that the person has power. This is a very subtle way of empowering the person who’s answering the question.
The words “right now” put our attention on what’s in front of us. We are not talking about what can be done in the future. Projects can sometimes seem overwhelming. We look at everything that needs to be done, all the moving parts, the sheer scope of what needs to be done and we retreat to the safety of our office, saying we will tackle it another day. Yet, if we just focus on one thing, right in front of us, we can start to make progress.