What we need is peace of mind. We can gain that only through the control of our mind.
We should live every moment with awareness.
Love is the center-point of life. We should perform all our actions while remaining focused on this center-point.
Love is the most natural thing for humans. We should perform all our actions, remaining focused on love.
We need to focus on our destination.  Let the thoughts arising in your mind pass by, like watching scenery through the window of a car. The thoughts cannot affect you if you don't allow them to capture your attention.
Chant your mantra while engaged in work. This way, the mind will be continuously focused on Him.