It is important for every person to be sufficiently present to himself in order to hear and follow the voice of his conscience. This requirement of interiority is all the more necessary as life often distracts us from any reflection, self-examination or introspection:
Return to your conscience, question it.... Turn inward, brethren, and in everything you do, see God as your witness.
Source: Catechism of the Catholic Church (Vatican.va)