We often look into our mind to know something, and so when we want to know ourselves, we often look into the mind for that also. But the mind is full of thoughts about what we want to know and never the thing itself. You will never find an apple or a lover or a sunset or anything in your mind, just thoughts about these things. And you will never find your true Self in the mind, just a lot of thoughts about the true Self. That is just what the mind is made of and so that is what you find in there.
What if you sense in your heart instead? I am not suggesting you think about what you might find in your heart. What if you actually sense the space inside your chest? What is actually here right now within the space of your body? It can be helpful to rest your hands over your chest, and then simply notice what is really present beneath your hands. No need to think much about it, just directly sense what is here.
First of all, how mysterious is it that there is a body with a heart? And even more mysterious is the simple existence of space beneath the hands resting on your heart. What is this simple mystery of a place called here? Why is there a "here" that holds your body and everything else that is present? What is that space itself under your hands like? If for just a moment you do not think about what is here and instead just sense the actual space under your hands, what do you find?