He may be relatively new to the role, but King Charles has learned quickly the extent of the commitment needed as monarch.
Not only has he taken on the extra responsibility as sovereign, he also continues to focus on the many of his passions and dedications built up over the years.
Of course, his beloved mother set the tone and her relentless service rarely saw her switch off from running the country.
Even in her 90s, the Queen maintained a very, very busy schedule.
Spending her days answering letters, dishing out knighthoods, having meetings with her staff as well as bishops, politicians and judges, every day was different, but seldom restful.
Various royal engagements - which ramp up in the build up to key events - mean there's very little down time, especially in the months before his Coronation.
It is said the King was very keen to maintain much of his mother's often hectic weekly timetable.
In the early evening, she always studied a report of the day's parliamentary proceedings before a regular Wednesday audience with the Prime Minister.
The famous red box remains albeit rebranded, and it contains a range of papers that not only require a signature but a lot of attention.
His Highness is rightly proud of his charity work and despite his ascent to the throne, his commitment to the causes so close to his heart simply will not stop.
Heading up 13 Prince's charities, including The Prince's Trust, The British Asian Trust and Business in the Community he won't just pass them on to others, although he will have a helping hand.
It may not seem that he has a lot of spare time, but his loves don't just get put to one side.
As a keen gardener, Charles has authored two books on ecology: Harmony: A New Way of Looking At The World, and On the Future of Food.
Not only that, but he also devotes time to another hobby of his, watercolour painting, though the reviews have not been kind.
In his role as heir, Charles was in charge of the Duchy of Cornwall - a private estate established by Edward III in 1337.
It covers 52,760 hectares across the UK, including farms, residential areas, commercial buildings and quarries.
It provides a huge amount of revenue each year, with the help of a team of 150 employees.
He's not alone, of course. Camilla supports her husband as he carries out his royal duties.
In an interview with British Vogue , she revealed that the key to a happy marriage is finding time to check in with each other.
She and Charles make sure to find a moment in the day to 'sit down together, have a cup of tea and discuss the day'.
Camilla said: “It’s not easy sometimes, but we do always try to have a point in the day when we meet. Sometimes it’s like ships passing in the night, but we always sit down together and have a cup of tea and discuss the day. We have a moment.”
Of course, it’s not all down to having tea together.
Other ways the pair spend quality time together includes reading. “It’s lovely to catch up when we have a bit of time,” Camilla explained.
“You know when we go away, the nicest thing is that we actually sit and read our books in different corners of the same room. It’s very relaxing because you know you don’t have to make conversation. You just sit and be together.”
She also carries out her own solo engagements, and has become patron or president of more than 90 organisations and charities since joining the royal family.
Even when she's not visiting the charities, Camilla will be keeping up to date with her work.
