Carissaadder, Thank you for answering Sylvia with practical advice.
I am just going to post a somewhat brief reply now, with more later when I'm in my usual stream-of-consciousnes-venting-to-the-world mode.
Slyvia, I am like you in many ways, but also perhaps different. For one thing, OCD is considered normal in my family (though ADD is not). The OCD gives me that ability to attend to all those details, though the ADD can make completion of a project very difficult.
When I was in library school classes (San Jose State) during the summer, many of my fellow students were school teachers (I too was employed as a school "librarian" at the time). They were familiar, no doubt, with the symptoms of ADD, whereas I was not, at the time. I frequently recall a moment when I couldn't keep straight two similar terms for two similar forms of html code, and had to ask several times; an English teacher gave me a serious look that I was not able to interpret until 6 years later when I was finally diagnosed with ADD.
I will answer more of your questions later, with regards to ADD and Librarianship.
For now I just want to confirm what you've already noticed: scholarships for an MLIS are hard to come by and typically skimpy. You might have better success with an on-campus job that gives you hands on experience in the library.
Try to think about and post what your expectations and imaginings are for a future for you with the degree in Library and Information Science.