By practising conscientiousness we keep our mind pure and harnessed to virtuous objects

By practising conscientiousness we keep our mind pure and harnessed to virtuous objects, and so our energy is not dissipated by external or internal distractions. As a result our mind becomes settled and gathered within, making it easy for us to develop virtuous concentration. Virtuous concentration makes our mind lucid and powerful, which in turn enables us to improve our wisdom.

Venerable Geshe Kelsang Gyatso Rinpoche,
How to Understand the Mind