In this deeply personal and vulnerable segment, Cate Campbell shared raw excerpts from the diary she kept while battling severe depression and isolation ahead of the Tokyo Olympics.

Prompted by Australia's tragic suicide statistics, she delivered a powerful reminder of why a simple act of kindness is sometimes all it takes to save a life from the darkness.

If you or someone you know is struggling, free and confidential support is available 24/7—please reach out to Lifeline on 13 11 14.