A good state of mind maintained through sheer will is not sustainable.
This is called a will-dependent state, which lapses quickly.
A good state of mind induced by soothing environment is not sustainable.
It is fickle and unreliable.
The ideal is a natural arising of the fluid mind – easy and spontaneous.
There is no fixation or obsession or attachment.
The current flows without impediment.
Such an ideal can be accomplished through the cleansing of base seeds residing in the mind’s sea.
The crucial elements in this cleansing process are sincerity, gratefulness, courage and surrender.