Whatever is defined is unreal. Its apparent existence depends on its definition.
Whatever is real does not need to be defined – it already exists.
If you want a list of things that have no real existence, look in a dictionary. Every word in a dictionary has its definition. A dictionary with just a list of words would be useless.
Everything you know is defined, otherwise you could not recognize it.
Since whatever troubles you is known, when you realize it is also unreal the trouble is not found.
Sit in a quiet, comfortable, pleasant place.
Notice the sensation of your breathing.
The air goes in and out.
You can sense it as your chest moves.
You can feel it in your diaphragm.
You can sense the cool air entering your nostrils and the warm air leaving.
Just feel it…
Now watch your thoughts.
Your thoughts come and go.
The thoughts create structures, stories, films and dreams.
All your troubles are in these.
But none of them are real.