[MENTION=8603]Eventhorizon[/MENTION]
Do you know what reification is?
To reify something is to take an abstract concept and perceive it as concrete. This can be problematic and lead to confusing and unpredictable results.
What 'you' are and how you perceive yourself to operate are abstract concepts. The self is abstract.
Take for example the idea of being a good swimmer - this can be a real and observable quality when it is in action, but what about when the person is not swimming and not in the water? What if they're trekking through a desert with no water? Luckily for them the concept of a swimmer is not a literal nor physical one, it's an idea, otherwise nobody would be able to make the claim unless they were actively swimming.
Your self is kind of the same way. It's real but not always concrete or literal.
What's good about that, though? Well the thing that is good about it is that it's not set in stone, it is changeable. If you say "I AM this" and believe that to be real and literal, then you're kind of setting yourself in stone, and making that aspect of you become and remain real.
It would be kind of hard to change if you believe you can't, right?