Daniel Radcliffe believes good relationships keep him grounded as a self-doubting actor

Daniel Radcliffe says the most important thing in life is having good relationships with your friends, family and loved ones.

The 'Harry Potter' actor admits he is often plagued by self-doubt and worries about his work and it is at these times when he realises having great friends and a loving family are so crucial.

Speaking in a live web chat as part of The Trevor Project's Talk to Me Campaign for National Suicide Prevention Month, he said: "When you do feel self-doubt or you do feel unhappy and you talk to someone about it, its better, I do believe that a problem shared is a problem halved.

"But with things like self-doubt and the slightly more nagging things you do have to have to live with them for a while ... You have to live in that place for a bit and if that really frightens you then that's when turning to a friend will help.

"Those are the times when the quality of the relationships around you are really what is most important in life, in anyone's life."

Daniel - who is dating production assistant Rosie Coker - admits he suffers from insecurities about his talents as an actor and spends hours fretting about his performances and roles.

However, the 23-year-old star insists these worries are common for a lot of the "neurotic" actors he knows.

When asked what the hardest thing about his career is, he revealed: "A lot of the time it's fighting your own insecurity and doubt and this is something I talk to a lot of actors about.

"Most of the actors I know are also some of the most neurotic people I know and it's strange that a combination like that exists so much.

"I think for a lot of the time about the jobs that I've got coming up I have a lot of nerves about them."

The Trevor Project is an organization that provides "crisis intervention and suicide prevention services to lesbian, gay, bisexual, transgender and questioning young people under 24".