Washington, January 17 : If reports are to be believed, Barack Obama is feeling a bit jittery about his first day as U. S. President.

"I''m sure I''ll have trouble sleeping the night before," Us magazine quoted Obama as saying during an interview for a CBS News primetime special.

"(There) has been so much work on the front end that I feel Jan. 21 is not going to feel that different from Jan. 19. But having said that, I think when you''re sitting in the Oval Office, you''re very clear that these decisions count. The magnitude of it is humbling," he added.

The president-elect further revealed that he would take the help of his family during the transition, including his mother-in-law Marian Robinson, who will also be moving into the White House with the Obama clan.

Talking about his mother-in-law, he said: "(We) get along great. In fact, she defends me when Michelle is too hard on me. So I want her there. She''s an ally. She can be a little bit of a buffer if I screw up." (ANI)