If it were your true purpose then you'd have your answer. You'd know it. As long as you keep asking us to write your purpose for you you haven't told us what your purpose is.
An example of a purpose.
I am reading / learning about. [fill in blank] so I can use this knowledge / skill in my life to [fill in blank]
quote:
So I can beat others and prove to myself and others that i'm not as dumb as I look.
you can achieve your above purpose by.
Running in a race
Entering a beauty pageant
go on a quiz show.
Enter an Idol (or idle if you want) contest.
Play snooker.
Yeah, even read a book.
Question is how would you know when you have won, When you have proven yourself to yourself, (you're always going to be the most difficult taskmaster to yourself so that is an impossible goal.) When you have proven yourself to others. What evidence do you even have you need to prove yourself to others? When are you going to know you're not as "dumb as you look"? (Who wrote the ratings that score you dumb according to your looks anyway 
)
Your goal is unrealistic therefore you are unable to recognise your purpose.
Why have you chosen to learn what you are studying ... really? What are you going to do with that information in a practical sense in your life?
Alex
