In the Practical Guide to Teshuva, Rabbi S. Wagschal writes:
-The process of teshuvah which begins on Rosh Chodesh Elul and continues until Yom Kippur, may be successfully achieved if it is performed in a gradual manner.
-One should strengthen his tefillah by becoming more punctilious about the times of the tefillah.
-In addition one should endeavor to improve the quality of his tefillah by increasing his level of conecntration and intention.
-The simple meaning of Kriyas Shema and the first blessing of Shemoneh Esrai should be clearly understood.
-Some emphasis should be put on raising one’s level of concentration during the recital of the prayers Ahavas Rabbah, Atah Chonein Le’adam, Hashivenu, Sleach Lanu and the first blessing of Birkas Hamazon.