what is love?

Tristan Dry As Professor Varela says in the interview, putting your attention and energy on any of the traditions that has understand this insight. Btw he was a well known Buddhist meditator so you can start your journey there.

Through connection to God, it is the prayers and meditation rituals in the religions, basically gradual alignment with our divine nature.

By finding a practice that can teach you how to embody that ultimate groundless human reality as much as possible, .......I would say.

At page 217, first of the 10th chapter from the book Embodied Mind (1991; Varela, Thompson and Rosch), we have some clues about this subject: "Our journey has now brought us to the point where we can appreciate that what we took to be solid ground is really more like shifting sand beneath our feet. We began with our common sense as cognitive scientists and found that our cognition emerges from the background of a world that extends beyond us but that cannot be found apart from our embodiment. When we shifted our attention away from this fundamental circularity to follow the movement of cognition alone, we found that we could discern no subjective ground, no permanent and abiding ego-self. When we tried to find the objective ground that we thought must still be present, we found a world enacted by our history of structural coupling. Finally, we saw that these various forms of groundlessness are really one: organism and environment enfold into each other and unfold from one another in the fundamental circularity that is life itself". PS. Indeed, this whole chapter aims to the groundlessness of experience and to answer precisely your question!

By letting go and being one's self and doing what needs to be done.