How can you find what is not a 'thing'?

Time and space exist not as as concepts but at perceptions. You perceive time passing as you read this, you perceive a space between yourself and the device you're looking at. There's a huge difference between a perception and a concept.

So there is no such thing as non-existence yet time and space do not exist? Time and space are percerptions, we are a 'collection' of perceptions - we perceive that we exist, we perceive that we know and that posts such as yours come from 'your' mind. Not a criticism, just making a point.

"Transcending" is the perception of change over time, "Improving" is the perception of change over time and because yyou perceive those 'things' have changed over time you're back to Duality.

"I got nothing..."

When you are no-thing you are everything.

When you feel as though you are nothing you want to be anything.

"Isness is God."
Meister Eckhart