Because winning careers, like winning start-ups, are in permanent beta: always a work in progress.

CNN: Permanent beta: Why your career is a work in progress

But I think the biggest influence for her spiritually has just been living her life in a way that has always been a work in progress.

CNN: J. Randy Taraborrelli: Madonna biographer

For both of our nations, living up to the ideals enshrined in these founding documents has sometimes been difficult, has always been a work in progress.

WHITEHOUSE: President Obama Addresses the British Parliament

But it is more honest to acknowledge that regardless of race, gender, ideology or professional background, impartiality is always a work-in-progress for judges.

CNN: Commentary: Judge Sotomayor is not a racist

"After Katrina a lot of people felt the recovery could have happened in a matter of months but in reality it was always going to be a five-year work in progress and that's what a lot of people did not understand, " Lee told CNN.

CNN: Why Nagin's leaving office 'with worse rating than Bush'

But repositioning the US for the 21st Century is a work in progress, and events always overtake plans and strategies.

BBC: Hillary Clinton: A long journey

In his new book (see article), Mr Greenspan delivers a timely warning that progress in policymaking is always vulnerable to reversal.

ECONOMIST: The global economy

The nonviolence practiced by men like Gandhi and King may not have been practical or possible in every circumstance, but the love that they preached -- their faith in human progress -- must always be the North Star that guides us on our journey.

CNN: Obama: 'Peace requires responsibility'

Of course, progress in our society has not always come without tensions, or struggles to overcome a painful past.

WHITEHOUSE: President Obama Speaks to the Australian Parliament

Media itself has always been at the center of progress, particularly in Africa.

FORBES: Up for Debate: How Mobile Media is Transforming Africa for Good

Not just because the intelligence isn't always 100 percent perfect, as we learned in other cases, but also because the rate of progress.

NPR: Israel, Iran and the Nuclear Question

"It is heading towards the fourth anniversary of the Agreement in another few weeks and I think progress has been very good, but as always we have to keep on watching issues that have not been dealt with, " he said.

BBC: Talks on political progress