MSN: 10 quiet moments that teach us we can find happiness through simple acts of kindness
10 quiet moments that teach us we can find happiness through simple acts of kindness
The New York Times: How Nearly a Century of Happiness Research Led to One Big Finding
How Nearly a Century of Happiness Research Led to One Big Finding
One-to-one is used when you talk about transfer or communications. You may use one-to-one when you can identify a source and a destination. For eg., a one-to-one email is one sent from a single person to another, i.e., no ccs or bccs. In maths, a one-to-one mapping maps one element of a set to a unique element in a target set. One-on-one is the correct adjective in your example. See Free ...
The 'one hand' could be any generic hand (no article) or a specific one (definite article). 'The other' refers to the 'matching hand' of the first one. There can only ever be one, and it is being referred to explicitly as the partner of the first, therefore it needs a definite article.
Both 'a single' and 'one single' are correct and commonly used phrases in English. They are interchangeable and can be used to emphasize the singularity of an item or person.
DC News Now on MSN: Women’s Wednesday | The science behind happiness and how to find it
On this week’s Women’s Wednesday, we’re learning how to find happiness with longtime psychologist Dr. Carole Sebenick, who also taught courses at the University of Maryland’s Psychology Department.