Kaivalya is the ultimate aim of yoga. Often translated as solitude or aloness, this gives the impression of a state of detachment, exemplified by the image of the lone hermit on the mountain top. This is a mistake borne out of the tendency to use words from one state of existance to describe conditions which cannot be accessed through language, language itself being a hinderence to the achievment of kaivalya.
Kaivalya is the perception of reality from the necessary state of undifferentiated, un qualified awareness which makes perception possible, it is what allows you to understand what I am saying, realizing the existance of this part of our being is called kaivalya. To get there , all categories must be left behind, so that what is left is that which is not categorizable, not this, not that, not I, not It, in this sense Kaivalya is solitude, in the sense of being alone, of being all-one, it is awareness of the unity of all conciousness, the ground state of existance, before existance, before time and space, before I am.
This state is as normal as apple pie, it is in every thought you have, every action you take. So achieving kaivalya is not some leap into a far away place detached from everyday life and responsibilities, that would mean detachement, or duality and avoidance, or ignorance. Kaivalya is here and now, the way things are, Yoga is the science of truth.
“Before enlightenment, chop wood, carry water,
after enlightenment, chop wood carry water”
The Yogi accepts everything just as it, all responsiblities, earning a living, taking care of him or herself, living in the world, as she has realised that to go against such contingencies is error and leads to more delusion and ignorance.