On Rosh Hashana everyone davens with extraordinary devotion, concentrating on the special tefillos that are the hallmark of the day. Regrettably, people tend to rush through the important portions of the Rosh Hashana service we say every day, such as Pesukei D'zimra and Shema.
This is a mistake. For when we say these tefillos on Rosh Hashana with proper intent and concentration, we elevate all the prayers we said routinely and without kavana all year.
(Yosher Divrei Emes)