Eating out can be deductible but it can be difficult to remember to save and annotate receipts from restaurants (especially since receipts come in all sizes).

FORBES: Recordkeeping and Tax Time

How it affected us on a, kind of, more human and more emotional level, that's difficult to quantify, but I remember when I - in my school, we had a French teacher who was actually an English woman.

NPR: Orchestrating Goodwill for Northern Ireland

But now that his inquiry might lead to something true, Nana found it difficult to remember how she usually played the game.

NEWYORKER: Soldier��s Joy

But I think it's also a time to remember that this has been a very difficult year, and a lot of people out there are having a very, very tough time.

WHITEHOUSE: President Obama Speaks to Press After Cabinet Meeting

"As a human being it is very difficult not to have sympathy for somebody that I cared about deeply, but it is also important to remember that that person that I cared about deeply did not in fact exist, " she replied.

BBC: The women betrayed by undercover officers

But we are here tonight to remember and celebrate a man who inspired a people and a nation to overcome another difficult time.

WHITEHOUSE: President Obama at the "Let Freedom Ring" Concert