Louis Tomlinson: 'X Factor performance of Just Hold On was most difficult moment of career'
![Louis Tomlinson: 'X Factor performance of Just Hold On was most difficult moment of career'](https://bloximages.chicago2.vip.townnews.com/journalstar.com/content/tncms/assets/v3/editorial/9/13/913e3721-9387-56a9-9535-218f927d2af5/5991bb43bccf3.image.jpg?resize=300%2C300)
Louis Tomlinson says performing on 'The X Factor' just days after his beloved mother's death was the most difficult moment of his career but friends, family and fans helped him through it.