The Sakodian Concentration Exercise

The purpose of this exercise is to improve your concentration and enhance your imagination facultys
Soo lets begin
first sit down relaxed
Clear your thoughts
let the images , that might be floating around in your head fade

Now concentrate on seeing this symbol before your inner eye

try to only see that symbol
the longer , the better

/me is curious how long ppl manage to hold it

So this is like eyetricks.com/jesus.htm

Looking at that one is kinda harder though (the triangle)

its not for an illusion, its for concentration ,and you can use any simple symbol(the one i used innitially i cant find nor create cuz im bad at photoshop and the like)