I agree, this is a great thread to have, perhaps everyone can compile lots of support for those going through kundalini awakening.

Kundalini in sanskrit means "coiled", and Shakti, is believed to be a goddess, or sometimes portrayed as a serpent, which is coiled up at the base of the spine, during kundalini awakening, Shakti uncoils all the way up the spine.

It lasts for a certain amount of time? That sort of defeats the purpose of awakening. An awakening doesn't die out, once awakened, the goal is to be always awake. Uncomfortable side effects and symptoms may cease, but the energies should be awake forever. A person will be able to easily have kundalini whenever they want, while still sticking to the balance of all chakras. This is why it's probably important to learn to control the kundalini.

"The goal of Tantra is to have the kundalini remain permanently elevated to the topmost psychoenergetic center, which state coincides with liberation. At the beginning, however, the kundalini will tend to return to the cakra at the base of the spine, because the body-mind is not yet adequately prepared. Therefore the practitioner must repeatedly invite the Goddess power to unite with her divine spouse, Shiva, at the top of Mount Kailasa, that is, in the sahasrara-cakra. This will gradually remove the karmic inclination toward identifying with the body-mind rather than Shiva-Shakti as one's ultimate identity. In Kashmiri Tantra, this ever-blissful transcendental identity is called aham ("I") versus the finite ego (ahamkara, "I-maker"), which is driven by the desire to maximize pleasure and minimize pain and yet continuously sows the seeds of suffering."

And once one is truly awakened Fully from Kundalini, they reach the climax of cosmic life. The stage of Nirvikalpa Samadhi, their whole life is changed, and they have a permanent enlightenment, permanent communication, with their higher power, it is said, in the last 150 years of history only two have actually achieved this full awakening. They were Sri Ramakrishna Paramhansa and Maharishi Ramana. Both these gentlemen awakened their Kundalini in their lifetime and gained enlightenment and finally salvation, thus they do not have to be reincarnated ever again.
It's not like Kundalini just stops, and by the time it does, you are most likely dead and reunited with the divine.