Life means the process of transmitting and manifesting accumulated Sanskars of innumerable lives that has come with Jiva's Chetan-energy, through the human body. Life changes every moment just like the flowing water of the river. Even then these changes are based on the old. Old Sanskars creates a path like the river creating an area for its smooth flow. Tendency of the flow of the life is towards the path created by old Sanskars and ordinarily new Sanskars are based on the old. For this reason, most human beings come in this world with heaps of Sanskars and leave the world with even the bigger heaps of Sanskars.
If we examine the roots of happiness-misery (even the presence of such feeling), we will notice that attachment is present at its root. Attachment means feelings of affectionate partiality towards something or someone. Attachment and Hate is born out of such feelings and that results in duality of Happiness and Misery. Human being develops such a nature that results in finding his own happiness. He develops attachments to many things in the world, while he is intensely looking for his own happiness. As per law of nature, uncontrolled ship is destroyed in the vast ocean from the power of the wind and water. Human being meets similar fate. If we analyze ourselves seriously and with peaceful mind, we will find that at the root of all our work, there is attachment. Any human being who looks within cannot deny this; because attachment is joined with the human body.
All kind of Karmas (work) cannot be done without some kind of attachment. Work means activity and that is not possible without the desire to perform it. Desire is one characteristic of attachments.
Pujya Shree Mota
Jivan Yog, Part 1,
Edition 1, Page 335.