At his lowest point he contemplated suicide, but these days Tom Fletcher says he is in a much clearer, healthier and more stable place.

The singer, who was diagnosed with bipolar disorder in 2010, explains that his outlook on life has changed over the last two years, largely thanks to his son Buzz.

"Having a kid has really helped me in my life. It gives you a sense of needing to be stable," he told The Mirror.

"It’s not about you any more, it’s about this child that you’ve decided to bring into the world. 

"You don’t have any choice but to cope with life because you’re doing it for someone else."

Tom and his wife Giovanna welcomed Buzz in 2013, and the McBusted star says it was a huge turning point for him. So much so, in fact, that he no longer uses medication.

The 30-year-old, who is expecting his second child early next year, first opened up about his mental health issues after Robin Williams's suicide last year.

Writing in response to a radio host who branded Williams' decision to take his own life as "diabolical," Tom said depression was no black and white issue.

"Sometimes … the storms come. I'm not talking about a light shower, I mean the full works," he wrote on his website. 

"The darkest skies you have ever seen … It's so completely consuming that it is suddenly not only the only thing you know but the only thing you have ever known.

"When I'm not in a storm I can remember pretty well what it was like being in it, but when I am in the storm I can't remember what it's like ever being happy."                     

We're delighted to hear Tom is doing so well these days.