Like Father, Like Son
Rebbe Yochanan says that a person should not deviate from his own trade or the trade of his fathers (Arachin 16b). The Gemara often offers Torah-based advice regarding how one should conduct himself in his affairs.
Parnassah
The advice not to leave one's own trade or the family trade, and three reasons offered for it, including a father's prayers for his son.
Rebbe Yochanan says that a person should not deviate from his own trade or the trade of his fathers (Arachin 16b). The Gemara often offers Torah-based advice regarding how one should conduct himself in his affairs.