A sustainable business group has challenged West Midlands companies to "spot the difference" running a green business can make over two months.
Envirowise wants firms in the region to take the test to see if they can make a go of well-intentioned new year resolutions to become more environmentally friendly.
The group says more than half of small businesses make new year's resolutions to go green, but they are often broken within one month as they prove too expensive or take up too many resources.
Envirowise says it can save local businesses time and money in the planning stage by offering free practical advice that can be rapidly implemented.
The group has created a web page, www.envirowise.gov.uk/challenge, where firms can select an initiative from a range of simple measures to take action on paper, water, energy or waste, and discover the small, simple measures that they can make to immediately trigger financial savings.
Envirowise regional manager John Barraclough said: "Businesses often fall down on their resolutions through lack of time, money or by being too ambitious.
"We can help all companies plan - and keep - their resolutions on the environment. All we ask is that companies focus their efforts on one area, measure their current use in January, implement a straightforward change and then re-measure use at end of February.
"This should allow people to spot the difference and identify savings in a very short space of time."
And psychologist Professor Stephen Wood, deputy director of the Institute of Work Psychology, agreed, saying that making a single resolution and planning in advance are keys to success in keeping new year promises.
"Whether you're a business or an individual, the top tips are the same," he said.
"Pick just one area to focus on to improve your chances of success.
"The extra time will allow you to reflect on what you really want to achieve, and then plan for it."