The Science of Eternality explains, the 5 basic truths of the pure eternal existence, as they are:
1. Isvara, The Supreme Controller
2. Jiva, The Subtly Controlled
3. Prakriti, The Material Nature
4. Kaal, The Cosmic Time &
5. Karma, The Activity (actions-reactions)
The first four are the pure eternal whereas the fifth one is not, the trick is to eternalise it.
Nothing here can be manifested (Divine creation) or manufactured (Human creation) without being controlled, somewhere, somehow; and as is obvious in both the prevalent scenarios, the creator is the ultimate enjoyer and the creation is means to an end.
"Ordinary actions when purified to the core &
unadulterated by attachment, transform into Extraordinary ones."
The only way to eternalise your activity, is to purify it - to liberate it from material contamination, mukti, and thus totally be part of the pure & eternal constitution. To act with intense purity, uncontaminated with the attachment to the fruits of your actions, is the way to eternalise the karma, and not by non-performance of action.
"The intense actions lose pure powerful potency,
whenever they are tailed with any material expectancy."
