Congrats Matty
I'm sure that you are an awesome inspiration for your students! Through your dedication and determination you are proving that if you put your mind to it you can accomplish anything
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As for ways to celebrate... the clothes are always a great choice, but I also try to do some activity that I couldn't do before because I got winded to quickly. I go to a tall building and walk/run up all the stairs to see how long it takes. (I use that as a recurring celebration by timing it with each new milestone I hit. I use the back stairs of a 15 story hospital near me. It's always the same location, and climate controlled, so I have an accurate gage instead of doing something outside that can be affected by weather conditions.)
Great going, you continue to inspire me