Robin Williams And Daughter Zelda Williams During Premiere Of Their Film 'House Of D'
Actors Robin Williams and daughter Zelda Williams pose for photographers during the premiere of their film "House of D" in New York April 10, 2005. Williams and Zelda star in the film directed by David Duchovny. Reuters/Bill Davila

On Friday, World Mental Health Day, Zelda Williams tweeted her thoughts on mental illness, expressing her sorrow about the suicide of her father, the superstar Robin Williams, a month earlier. She put up a number of follow-up tweets, asking people to inform and share if they needed help from others on the subject, as she noted Robin Williams put a name to this topic that can be "difficult to understand."

However, she is upset that very few know much about depression and mental illness.

So please, let's help stop the misconceptions & support those who need our help. Healing the whole starts with healing minds. - Zelda Williams (@zeldawilliams) October 10, 2014

She wrote it is important that people know about the illness and take steps to conquer it. No matter what the problems are, people should be aware of it and take steps to challenge it.

Lastly, my dad openly fought depression his whole life, both in general and his own. No matter what anyone says, it is a FIGHT. Fight on. - Zelda Williams (@zeldawilliams) October 10, 2014

Robin Williams committed suicide and died on Aug. 11, when he was 63, having struggled with depression and substance abuse problems for years before he died. He was found dead due to asphyxiation by hanging. Some chemicals were found in his coat pockets. He is also survived by his wife Susan Schneider and sons Zachary and Cody.

The 25-year-old Zelda took to Tumblr back in August, in which she had written an extremely emotional heartbreak letter to him. "Dad was, is and always will be one of the kindest, most generous, gentlest souls I've ever known," she wrote. She explained it was not only her own but also the entire world that has been darkened and has become colourless and dimmer. She feels everyone needs to work harder at filling up the space. The actress also mentioned many mental health charities she had been associated with, including Barrow Neurological Foundation and Hope for the Warriors.

Reacting to the death, as well as Zelda's sad reaction, people have become aware that suicide, depression and substance abuse has risen over the years, mainly due to lack of awareness and action on the subject. Extending a helping hand could go a long way in improving matters, according to the Huffington Post.