Please see this answer for details.
The fully liberated ones (arahants) tend to live as monks or nuns, because they can no longer live the lay materialistic life. They are completely free from all mental suffering and mental defilements.
They may experience physical pain, but they can mentally endure it. Physical pain does not lead to mental suffering for them.
They no longer experience greed/ lust, aversion (including hate) and delusion. They no longer crave for sensual pleasures or crave to become something. They don't experience boredom.
They may plan to do something, but they never plan to become something or somebody. They don't brood about the past or, dream or worry about the future.
Where the unenlightened feel boredom due to inactivity or feel loneliness due to lack of company, the arahants feel completely at ease and peaceful, and even prefer this. Their mental state is peaceful, free of "noise" and mental agitation of any kind.
They eat or take care of their health only out of necessity for maintenance and not with desires for sensual pleasures or to become something or somebody.
Their mental state will be that of peace and bliss all the time.
From the Dhammapada:
The fever of passion exists not for him who has completed the journey, who is sorrowless and wholly set free, and has broken all
The mindful ones exert themselves. They are not attached to any home; like swans that abandon the lake, they leave home after home
Those who do not accumulate and are wise regarding food, whose object is the Void, the Unconditioned Freedom — their track cannot be
traced, like that of birds in the air.
He whose cankers are destroyed and who is not attached to food, whose object is the Void, the Unconditioned Freedom — his path cannot
be traced, like that of birds in the air.
Even the gods hold dear the wise one, whose senses are subdued like horses well trained by a charioteer, whose pride is destroyed and
who is free from the cankers.
There is no more worldly existence for the wise one who, like the earth, resents nothing, who is firm as a high pillar and as pure as a
deep pool free from mud.
Calm is his thought, calm his speech, and calm his deed, who, truly knowing, is wholly freed, perfectly tranquil and wise.
The man who is without blind faith, who knows the Uncreated, who has severed all links, destroyed all causes (for karma, good and
evil), and thrown out all desires — he, truly, is the most excellent
Inspiring, indeed, is that place where Arahants dwell, be it a village, a forest, a vale, or a hill.
Inspiring are the forests in which worldlings find no pleasure. There the passionless will rejoice, for they seek no sensual
Arahantavagga of Dhammapada