Nothing matters, but in what way could nothing matter?
Suppose for a moment that no thing is real and then suppose for a moment that nothing is real.
These two suppositions are distinct: the first (no thing is real) would have us consider that all things are mere patterns of energy, projections of the mind made manifest through the senses of sight, sound, taste, touch, and smell, which are themselves the result of a thing that is both pattern and projection.
The second supposition (nothing is real) would have us consider nothing by having us stop the mind completely, bearing in mind that seeking can be a form of grasping or controlling, which would preclude any further stopping. If we're capable and wise, we might be a mirror and bring the mind to a stop, perhaps with eyes closed, body at rest, in a place saturated with perfect silence; we would neither seek to stop the mind nor would we seek not to stop the mind.
In light of these suppositions, how could nothing matter? Or, how could anything matter? If I move in a certain direction, with a certain intention of having a certain outcome, something matters. And it could only matter in two ways: it is relevant to some purpose and it is significant for some reason.
Nothing matters to those who would avoid the punishment of oblivion for evil deeds committed. At a certain level of personal development, nothing is both relevant to some purpose (being a good person, having faith in a source of goodness, performing good deeds) and significant for some reason (serves as a reminder of what can happen when you stop caring about others, lose faith in a source of goodness, and perform evil deeds).
Nothing matters to those who would welcome the stillness and silence that attends a profound sense of peace in the present moment. At a certain level of personal development, nothing is both relevant to some purpose (allowing silence to surround you, attending to a profound sense of peace, basking in the stillness of the present moment) and significant for some reason (serves as a reminder of what can happen when you make time to be).
At one level of personal development, it is perfectly understandable why one person would resist the notions that nothing matters and that nothing matters, given that nothing is associated so strongly with a dreadful prospect of oblivion. At another level of development, it is also perfectly understandable why another person would at least consider the notions that nothing matters and that nothing matters, given that nothing is associated so strongly with the unspeakable stillness and silence of a profound peace in the present moment. I would invite each of these persons to consider the following:
(1) Nothing is always, always and forever relative to something, which means it could never subsist on its own. The cosmological Big Bang had something within it that allowed it to give birth, immediately or eventually, to the phenomena of space and time, matter and energy, sentience and awareness.
(2) The perception of nothing is always, always and forever made known in relation to something relevant and significant, which means it could never exist without relevance and significance. The intention to manifest an outcome relies on nothing and something to establish relevance and significance.
My suggestion is not this: break your association of nothing with oblivion or enlightenment. My suggestion is this: expand your notion of nothing, relative to something, to include your perception of nothing in relation to your perception of anything relevant and significant.