What are the implications of "ha'Yashar ve'ha'Tov"?
Ramban #1: To figure out what is right and good in the Eyes of Hashem 5 and to do it.
See R. Chavel's footnotes.
Ramban: The Torah inserts this after the Mitzvah to observe the Mitzvos that are obligatory..
By sometimes foregoing one's rights. See Torah Temimah, 72 & 73. See also Ramban, DH 've'Zeh Inyan Gadol', who elaborates.
See Sifsei Chachamim there.
And not necessarily what is right and good in one's own eyes.
And what are the connotations of "Lema'an Yitav lach"?