Congratulations on facing your fear and getting up and riding again. I have not had to cross railroad tracks yet, but I know if I came across them I would walk my bike across for fear of getting my tire stuck. I am sorry your friends laufghed. It was quite rude of them to do so. I wish they would have been more suportive. We all fall. Read the different threads, some are devoted to falling. 
Welcome to TE! I hope you visit often and keep riding.
Jennifer
“Live as if you were to die tomorrow. Learn as if you were to live forever.”
-Mahatma Gandhi
"We are what we repeatedly do. Excellence, therefore, is not an act but a habit."
-Aristotle