Tessy Ojo knows first-hand the devastating impact bullies can make on a young person's life.
The 48-year-old has beaten her mental health demons after she was relentlessly bullied because of her height when she was at school.
So Tessy is using all of her personal experiences to empower young people as head of the only charity set up in Princess Diana's memory.
And she's getting more than a little help from Diana's two beloved sons, Prince William and Prince Harry .
The CEO of the Diana Award charity has spoken of how being 'plagued' by bullies led her to empower young people to make positive change with the help of the princes.
Tessy has opened up to the Mirror about how being six foot at the age of 13 led her to overcome her demons and help inspire children across the UK struggling with mental health issues.
And she firmly believes that young people have the power to change the world.
This is something which Tessy has embodied throughout her life.
She would plead with her friends and family to find "any way of being shorter" when she was bullied about her height.
Speaking to the Mirror's mental health podcast, No Really, I'm Fine , she has told of how volunteering at a young age helped her overcome her mental health demons.
Tessy said: "It was incredibly difficult. Being a teenager was the most challenging phase of my life.
"It was, for me it was that sense of, what I would what I look back now and refer to as being bullied because I was too tall."
"I had this group of girls who kind-of always picked on me because of my height and they always said things like, 'oh you're too tall you won't be a dancer', 'your legs are too long' and I wasn't always in sync with them.
"So, I chose to leave the dance group because it just made my life hell."
It was at this moment that Tessy's parents intervened and her mother asked her to teach some children dance lessons.
This formed the foundation of what is at the core of the Diana Award today.
Tessy said: "I was running for four groups for different age groups of young people learn to dance.
"For a long time being tall plagued me but you know, this is where the power of a role model was so important because I remember saying to my parents, and I'm too tall.
"My parents then called a meeting and they wanted to help me find value in who I am and not about what was on the outside.
"They had this idea of 'we need to help refocus her'. They needed to help me see her values inside and not on the outside.
"And what they did, which absolutely changed the trajectory of my life, was got me involved in volunteering. They got me to begin to help kids who wanted to learn how to dance."
Tessy has spent almost 20 years empowering children to volunteer and continue positive action through the help of the Diana Award and the help of Prince Harry.
Tessy said: "Only a couple of months ago Prince Harry attended our mentoring summit.
"He's very much involved in our mentoring programme around making sure young people have access to a mentor.
"He talked about having a mentor when he was in the military and how that confidence to move forward.
"Very recently he came to events in July, he said his father helped him really realise how important it is that young people are surrounded by role models."
The scheme has now expanded to support children struggling with mental health issues through a 24-hour helpline.
The crisis messenger works simply in that all the young person needs to do is text DA for free to 85258.
The hope is that on World Mental Health Day, the service can help youngsters struggling with suicidal thoughts, self-harm bullying and other types of breakdown to reach out anonymously.
