56 year-old actress, Julia Louis-Dreyfus, publicly announced her breast cancer diagnosis in September, but has chosen not to let it keep her from her job. As of Thursday October 19, she was back to work, noting that being at work was a source of "comfort and joy".

She posted a video that co-stars had made for her to remind her that she's a fighter, to the tune of Katy Perry's "Roar". She was touched and thanked them specifically in a post she put up on Instagram following her second chemo treatment.

For more on Louis-Dreyfus' public journey, and to view the video, click here.