The Rebbe greatly urged his followers to seclude themselves, preferably in the fields or forests, for at least one hour a day in order to meditate and express themselves in their native tongue before HaShem. The best time for this is at night, while most people are sleeping. If there is one spiritual practice central to Breslover Chassidus, it is hisbodedus.
(See Likkutei Moharan I, 52; ibid. II, 25, 95-101, et al.)
However, if one finds it impossible to practice hisbodedus for a full hour, one should do so even for a shorter time—even in a private corner of one’s home or under one’s talis—rather than let a day pass without hisbodedus.
(Sichos ha-Ran 274, 275)