But what about שלא עשני גוי. When I thank Hashem that I am not a goy, one time should suffice. Because if I wasn't a goy yesterday it is impossible for me to be a goy today! So once in a lifetime should be enough.
The answer is that there is a new spark of Jewishness placed in our soul daily. We must feel this spark and appreciate that if we weren't Jewish we wouldn't have a true life. All of our chiyus, all of our vitality and life force should be drawn from our Jewishness.
The late Tolna Rebbe ztz"l used to come to his grandchildren's home [including Mori V'Rabbi Shlita the present Rebbe] late at night and sing and dance with them to the tune of שלא עשני גוי. The Rebbe tells this story with such relish. This inculcated in the children an appreciation of how fortunate they are.
So every day before you make the bracha think [thinking before a bracha - what a NOVEL concept:-)] of how wonderful it is to be a member of the chosen people. To be able to enjoy Shabbos and Yom Tov, Torah study and the many mitzvos we do. To internalize the knowledge that we will all live on forever, as we know - כל ישראל יש להם חלק לעולם הבא.
SHE-LO ASANI GOY.
AHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!!
[Rav Charlap ztz"l page 33]