Occupying the world's most powerful post, Obama has his task cut out -- to bail out America from the worst financial crisis in decades and to carve a new path on the foreign policy front ensuring a clean break from the disastrous policies of the George W Bush regime during the past eight years.
He has forewarned the people of the tough days ahead and urged them to get ready for sacrifices.
Experts believe the goodwill that Obama carries with the people of the US right now, will help him in riding through the crisis and motivate Americans to face the hurdles with a smile.
Image: Spectators wave flags at the National Mall during the inauguration of Barack Obama.
Photograph: Shannon Stapleton/Reuters
Also see: An all-star celebration for Barack Obama