Although Shemittah is primarily connected with the holiness of the land of Israel, where the laws of Shemittah are in force, it has been explained on many occasions that a Jew, wherever he is, is expected in his everyday life, especially in his spiritual life, to transform his environment—his home as well as his surroundings—into a (spiritual) “Land of Israel.”
Needless to say, before a man sets out to conquer the world, he must first conquer himself, through the subjugation of the "earthly" and "beastly" in his own nature...
"Man possesses a body and а soul. And just as there is material poverty (in food, clothing and shelter), so there is spiritual poverty, where the deficiency is in spiritual things..."
Everyone has the ability to make the coming year, a year of very great accomplishments indeed, and G-d, “who desires repentance,” helps to carry out such determined resolutions.
Coming after the Shemitah year—when Jewish farmers leave the fields and study Torah—Hakhel is an opportunity to unite and gain inspiration for the six years of work that follow.
A person might also become disheartened wondering how is one to fulfill adequately one’s real purpose in life on this earth, seeing that most of one’s time is taken up with eating and drinking, sleeping, earning a livelihood, etc . . .
Rosh Hashana means the beginning (head) of the year (creation). If so, why is it celebrated on the anniversary of the sixth day of creation and not on the first?
The mitzvah of Hakhel reminds us that wherever Jews are, and however dispersed they may be, each one remains an integral part of the Hakhel-people, the one people.