The choice of the time

"and of the duration of the prayer
arises from a determined will,
revealing the secrets of the heart.

"One does not undertake contemplative prayer
only when one has the time:
one makes time for the Lord,
with the firm determination not to give up,
no matter what trials
and dryness one may encounter.

"One cannot always meditate,
but one can always enter into inner prayer,
independently of the conditions
of health, work, or emotional state.

"The heart
is the place of this quest and encounter,
in poverty and in faith."
Catechism of the Catholic Church, n. 2710