Martha Stewart is something of a unique figure on the American business and cultural landscape. 

Stewart worked as a stockbroker before establishing her own catering company. This led to cookbooks, a magazine, and eventually a show.

As the 1990s came to a close, Stewart consolidated her various media interests into a single company and floated it on the New York Stock Exchange, becoming America's first self-made female billionaire in the process.

Stewart was considered America's goddess of domestic perfection by the time news broke of her role in the ImClone stock trading case. She served time, paid fines and penalties -- and bounced back.

The challenge of rebuilding her troubled empire -- and her name -- has kept her working at a high level into her late 70s. Her brand name now graces carpet tiles, fine wines, and craft items.

She makes frequent guest appearances on shows in between business duties and even joined up with a marijuana firm to develop "sensible products for people's beloved pets," citing her "years of experience in the subject of living" by way of qualification.

How does she maintain her energy and enthusiasm for entrepreneurship at her age, and after so much hardship?

The daily productivity rituals of Martha Stewart

You can start with the fact that Stewart takes great care of her health and well-being first and foremost.

Like the routines of many other successful women, Stewart's schedule embodies her ideals. She rises at 5 a.m. to walk her dogs and check on her greenhouses ("I feel responsible for these plants--it's like seeing that the children are fed and dressed") before working out with her personal trainer. Stewart breakfasts mindfully on healthy fruit and veggies from her own gardens.

The entrepreneur has a driver to take her to the city, which enables her to catch up on reading and make a start on her communication tasks -- interviews, emails, etc.

While certain luxuries in Stewart's schedule are indivisible from her wealth, this commute time is available to many of us who drive into town when we could simply take the train (or even carpool and share the driving throughout the week).

The first job in the city is to finish her emails and calls before a morning operations meeting with her executives.

Stewart next works on her media appearances for a few hours, until an afternoon merchandise meeting.  "My dogs test every product," she says of her branded dog clothing - and you can't help but wonder if that includes the marijuana products.

The drive back from the city is a chance to ferry good food to feed her grandchildren, evening guests, and chickens. After entertaining in the evening, Stewart watches the nightly chat shows to relax -- although work is not yet finished, as she achieves closure on the day by writing memos for the next one.

When your lifestyle is indivisible from your business, it is possible to maintain both to a high standard. And while not everyone wants to work until they're 78 or more, figuring out how to enjoy life after retirement age is a major challenge that nobody really prepares you for. Take a leaf from Martha Stewart's book and the path may become a bit more clear.