Abandoned has given some excellent tips. I think partly its hard to be critical because I know what it's like to whip your baby out and the fear that it might be considered ugly.... I kind of really admire you for being able to put it up here.
I would say that in criticising this piece it really does depend on the market. If its for therapy for you then really it is a stand alone piece -that's not something any of us can comment on other than to applaud the bravery. As you describe - the first person is really difficult and I can imagine more so for you because even when you are talking about yourself you dont actually use the first person very much - you tend to be much more externally observational.... I personally find first person much easier and third person feels really artificial.
If the piece is to be published I would say it does need a fair bit of work. Its almost as if for me your natural style (and I say what I infer to be natural from your posts here and having met you) you cover material much better when you are giving incisive no frills factual bullet points. The style suits you better.
A great maxim and one which I invariably fail to apply is Orwell's - never use two words when one will do.
Writing is an art and there are many different forms. A professor of physics may write an excellent science paper that persuades a whole generation of researchers to adopt his theories, but can he write a novel. Can he f***? Same with newspaper journalists trying to write more elaborately - they can't always manage that transition.
I think I'm going all round the houses to say
a) who is your audience? ie to have an audience - its got to be marketable. Who are they? Where are they? How is your work going to reach them? Will it appeal to them? How much are you prepared to compromise in order to engage them?
b) try different styles of writing - and then read them out loud. How does each piece sound? If it doesnt flow then maybe you need to look at a different way of presenting the material. (I kind of feel this isn't quite flowing yet, not as well as it could)
I kind of feel almost out of order to be even offering any advice - after all I have had nothing published and you clearly are lightyears ahead of me. if you want to bring it over when I am there week after next I'd be happy to talk about it with you and give you some other input.