I am 66 and was bedridden for 3 years due to a lumbar surgery. I had PT and now I can walk. How can I overcome my use of a walker?

I am 66, and was bedridden for 3 years due to a lumbar surgery then I had physical therapy and now I can walk. However, for long trips I need to use my walker and I hate it but I need it for long trips. I want to start working as that also in a music teacher. I am embarrassed and almost hurt to tears to have my students see me in a walker. Do you have any suggestions on how I can overcome my use of a walker? Sometimes if I am on a small hill I would jump on my walker and ride it like a bike just to show that I am not too old to do this.