The mountain is unmoving,
but ever-changing,
and always inspiring.

When 'all at sea':
keep still to stay afloat;
flailing around risks being drowned.

When 'lost in the woods':
stay put to keep calm;
threshing about risks not getting out.

Mist clears:
the sage is a mountain!

These allegories serve as a caution against hasty or erratic attempts to retrieve healthy mental balance via undisciplined or unregulated therapies.
To keep calm, and carry on a simple routine, goes hand-in-hand with its partner-behaviour of clear-headed thinking and problem solving.
This is another example of Taoism's espousal of 'non-action' (not to be confused with inaction) as one of its guiding principles.