When Emma Lawton was 29 she was diagnosed with Parkinson's disease.

As a graphic designer, drawing is a huge part of her life but over the past three years the tremor in her hands has grown more pronounced stopping her from writing and drawing straight lines.

Enter Haiyan Zhang and her invention that is changing Emma's life.

Watch more stories from the The Big Life Fix on BBC Two at 21:00 on Wednesday 7, 14 and 21 Dec or catch up later online.

Join the conversation - find us on Facebook, Instagram, Snapchat and Twitter#BigLifeFix.