As well, we can't fail to recommend the official prayer of the Church, the
Liturgy of the Hours, nicely compiled in this one volume. Following the rhythms of this prayer (as priests and religious do) will take some practice. However, there are plenty of how-to resources online (see ours
here), or even
apps to read the Liturgy out loud for you, and there's nothing like the Psalms to bring peace to the soul ... especially when you know you're joining your voice to that of the whole Church.