Sir Bob Geldof has said he "blames himself" for the death of his daughter Peaches, who died of a heroin overdose earlier this year.
The Boomtown Rats singer and activist said he "goes over and over and over" what he could have done to help the 24-year-old mother of two who had started using the drug again in the months leading up to her death.
He described the journalist, model and television presenter as "super bright" but "frantic".
Ms Geldof was found dead by her husband Tom Cohen at their home in Wrotham, Kent, on April 7 this year.
Sir Bob said: "You blame yourself. You're the father who is responsible and clearly failed.
"For anybody who has a dead kid and you're a parent, you go back, you go back, you go over.
"What could you have done? You do as much as you can."
He said newspaper attacks on his daughters following their mother Paula Yates' death in 2000 had also "damaged" them.
Asked if her knew about his daughter's drug addiction, he said: "Of course I knew about it and we did more than talk about it. She was super bright. Too bright.
"A very errant mind that could focus intensely on a book which she would consume and just absorb it.
"But the rest was a franticness. She knew what life was supposed to be and God bless her, she tried very hard to get there. And she didn't make it."
An inquest heard she had started using heroin again in February, after taking the substitute drug methadone for two and a half years.
Sir Bob said performing with the Boomtown Rats helps him to escape the grief of losing Peaches, a mother of two.
Why are you making commenting on The Herald only available to subscribers?
It should have been a safe space for informed debate, somewhere for readers to discuss issues around the biggest stories of the day, but all too often the below the line comments on most websites have become bogged down by off-topic discussions and abuse.
heraldscotland.com is tackling this problem by allowing only subscribers to comment.
We are doing this to improve the experience for our loyal readers and we believe it will reduce the ability of trolls and troublemakers, who occasionally find their way onto our site, to abuse our journalists and readers. We also hope it will help the comments section fulfil its promise as a part of Scotland's conversation with itself.
We are lucky at The Herald. We are read by an informed, educated readership who can add their knowledge and insights to our stories.
That is invaluable.
We are making the subscriber-only change to support our valued readers, who tell us they don't want the site cluttered up with irrelevant comments, untruths and abuse.
In the past, the journalist’s job was to collect and distribute information to the audience. Technology means that readers can shape a discussion. We look forward to hearing from you on heraldscotland.com
Comments & Moderation
Readers’ comments: You are personally liable for the content of any comments you upload to this website, so please act responsibly. We do not pre-moderate or monitor readers’ comments appearing on our websites, but we do post-moderate in response to complaints we receive or otherwise when a potential problem comes to our attention. You can make a complaint by using the ‘report this post’ link . We may then apply our discretion under the user terms to amend or delete comments.
Post moderation is undertaken full-time 9am-6pm on weekdays, and on a part-time basis outwith those hours.
Read the rules hereComments are closed on this article