Since the forehead is... 

drawn back (not completely) 

and then the eyebrow bones stand out.

 

That's why it's assumed...

that the person he does not have good chances of luck before the age of 30, 

however this is not at all...

 

The person seems to have achievements before the age of 28, but without clear chances of luck from the age of 28 to 40.

 

like that...

This forehead means that the person has a bad relationship with his parents.