I never signed up to teach for the thank you. Not just from students, but admins as well. This is a not a job where people can thrive on thank you. The look on a student's face when they finally understand something is worth more than any thank you they could offer.
They thank yous I have received over the years are beautiful and are something I hold dear. I think we could all thank people more than we do for the nice things that happen every day. Maybe it's sad that I do not expect thanks for what I do every day for students. I just never got into teaching for the thanks. I got into teaching to maker a difference. I can do that without the thanks, but when I do get them, they are stored in a special place so I can revisit them when times are tough.
Take a moment and thank someone who is awesome. It will make their day.