Been there.
I remember a time back in high school, I was not only shy but quiet (Goes with the territory). Around school, I was referred to as "uh...you." or someone else's name in place of mine. Things got to the point where I was voted the most quiet in my high school year book and I didn't know there was a poll going on! I overheard a friend who pointed my name out on the yearbook to his friends and they all went "It's WHOOOoo??".
Seems shyness has a partner named quiet...
Some time later on my first job, I was going around the office delivering reports to the office staff and on my last drop off I came up to the intended reciprient and walked into her cubicle. I was standing a couple of feet away with her left shoulder towards me when I started speaking. Well, I've never seen a person scare so bad. I just apologised and left.
Came back, dropped off the reports, then left.
Breaking the barrier...
The turning point for me was my first office xmas party. I was sitting at a table along with some co-workers from my department. I began to learn our department was the only one not in the habit of participating in the entertainment segment of the party. While every other department was making fools of themselves on stage in front of everyone else, we were on the sidelines watching them. At some point during the party, one of the customer service reps created a xmas poem for us to read on stage. We took it and debated how it should present it; should it be presented as a group, should one person do this, any other suggestions. We were running out of time while debating this like it's some major project. I didn't know why, but I spoke up and said "I'll do it".
I was already in trouble when I was handed the poem. I had never seen it and I only had a few minutes to rehearse it. After I came back from the men's room, I was kind of ready to present it. When it was over, I got a standing ovation, I made my department look good, and even the wife of the CEO asked me to dance! Back at the office, I was referred to by my own name and not "Hey, you".
...and that's why I'm called sylentwulfie!