pretending is an action of lie to yourself
because it shows that you don't believe in yourself
and you are not capable of showing the real you.
pretending is a big world of lie
you can see here the people  
pretending to be someone else,
pretending in front of people they want to please ,
pretending to be a perfect person,
pretending to gain good image ,
pretending to have a good impression ,
and pretending for greediness,

I guess this is the truth we cannot blame others