Who Do You Think You Are?

Who do you think you are? Are you pretending as to who you are or are you actually a truthful portrayal of ones self?
Recently I was asked by a friend if I portrayed a pretended self towards others. Then a television shows concluding statement caused the creation of a different, but connected question. Do I focus so often on my past that I cause myself to portray who I was and not whom I have become? These two questions combined caused myself to ask, who do you think you are, and in connection to that do I portray who I think I am?

When Do You Believe?

If someone, just an anyone, diagnoses you with what they believe you have, when is it that you believe them?
Ever since I was a kid I've been a medical mystery to my doctors, but then again I could possibly have been their easiest case. I have an issue with being overly tired and therefore a lack of energy and motivation, (often looked to as procrastination). So my doctor at the time put me on iron vitamins. They did a minimal effort to increase my energy level so they supposedly worked. When my next doctor decided that she would do further testing to discover if there were an alternative diagnosis I was headed off to university three provinces away. So in following with her advice I went to yet another doctor for a second opinion. She began her series of tests to create a diagnosis, and merely ended with a hypothesis and a guess. Either I had mono, didn't realize I had it and was just taking an extremely long recovery period, or I was suffering from depression. I told her that I couldn't possibly be suffering from depression for two reasons, one I was happy, two my father declared it impossible when I had suggested it of myself a couple of years previous, (due to the results of a self-test in a magazine). Now two years after that doctor I am beginning another series of test for yet another doctor. However I arrive home to my room mate whom suggests that my diagnosis may be depression. I began to tell her my two reasons as to why that couldn't possibly be the case, when she countered my first reason with the question, "Are you really happy?". She then went on to explain her diagnosis and due to our living situation she had a deeper more personal connection with which to make her observations back up the 'truthfulness' of her diagnosis, if it is 'truth'? Why is it then that I have such a hard time believing the guess of a doctor, the observations of a educated and trusted friend, and all the self-tests I've taken? Is it all because of the words said by my father? Or something else entirely? When do you finally let yourself believe?