Eight-year-old Lacey-Maria from Llanelli lost her dad to suicide last year.
She spoke to ITV News about how she wants to help other children to manage their grief.
Her father Richard was 27 when he took his own life. He had been battling depression but his family didn't know how bad it had become.
Lacey-Maria says she doesn't want the same thing to happen to other dads.
Now she plans to help other children who have lost parents.
Mum Kelsey says she's proud of her daughter and reminds her about her dad everyday.
Lacey-Maria and Kelsey are backing a new suicide prevention pledge card which has been designed to make it easier for men to talk to friends and family.
It's called the Pledge and it is being backed by former Wales goalkeeper Neville Southall.
If you have been affected by this issue and need some support the Samaritans are available 24 hours a day on 116 123 or through their website.