"It wasn't a matter of what I am but what I think I am"

I was struggling a lot during my self-improvement researches about computer Science. I was feeling really bad, couldn't keep anything in mind for more than 20 seconds, it was painful but then there was an Advertisement about Jim Kwik in which he was giving a speech on how memory is not something fixed but can be improved. He was so convinced and determinated that I've started to believe in those words and realized that he was totally right! It wasn't a matter of what I am but what I think I am. I Haven't finished the quest yet but can see where I am going, and I like it.