The Rebbe clarifies that "Orch Chaim Mat'im" refers to living with b’chol derachecha da’ehu—acknowledging Hashem in all ways. Unlike explicit obligations, this path allows for constant growth, as Hashem is infinite. The letter concludes with blessings for increased trust in Hashem and growth in Torah, mitzvot, and this way of life.
https://www.torahrecordings.com/rebbe/igroskodesh/014/005/5136