Melinda Gates reveals the secret of their marriage success

Melinda Gates has opened up about her 25-year marriage to her husband, Bill, revealing that one of the secrets to everlasting love with a tech titan is patience.

The 54-year-old philanthropist, who is promoting her new book, The Moment of Lift: How Empowering Women Changes the World, couldn't help but laugh when she was congratulated on their recent milestone anniversary during her interview with The Sunday Times.

'I think I laugh because, I mean, it’s funny, we’ve just gotten to a point in life where Bill and I can both laugh about more things,' she explained. 'And, believe me, I can remember some days that were so incredibly hard in our marriage where you thought, "Can I do this?"'She recalled being furious with her husband years ago because he was reading a book about Winston Churchill instead of helping her pack up the car and get their children ready.

Although Melinda credited patience with helping her stay married to a work-obsessed entrepreneur, she said he is actually pretty easy to live with most of the time.

'He needs a little training, and he’d tell you that too,' she added, noting that she was the one who helped him find a work-life balance.

'When he was having trouble making the decision about getting married, he was incredibly clear that it was not about me, it was about "Can I get the balance right between work and family life?"' she explained.

In her book, Melinda gives readers a rare glimpse into her personal life, recalling how she met the man who would one day become her husband when she started her job.