I think that some personality traits that it would take to write creatively would be openness to take experiences from your own life or things that you read in newspapers or stories and to transform it into a story that is partly fiction but which may put a different perspective on an idea or issue. The writing skills you would need would be an ability to transform a setting or an event into writing that readers can read and experience that moment for themselves.
I think that to write journalistically, you need to be able to talk to people and know the right questions to ask. If you are unable to have successful and deep interviews then your writing will be flat. You also need to be able to dedicate time to research and to seeking out specific people or places to ask questions. If you are not in the right place at the right time you may miss a crucial opportunity to get information that is unavailable to other journalists. The writing skills you would need would be an ability to take research and interviews and meld them together into one complete narrative. This narrative should be attention-grabbing for readers and should illuminate a new perspective or issue that is relatively unexplored.
To write academically, your personality should be that you like to find deeper meanings below the surface. To write academically you need to analyze the work of others and pick out details and hidden meanings and illuminate their meanings. You can shed light on social and historical events through the analysis of the writings of the people who lived in and experiences those times.
The Jungle by Upton Sinclair combines creative writing and journalistic writing to shed light on the horrible conditions in meat processing plants in the 19th century. Although the characters and events were fictional, the experiences of real workers were much like those experienced by the characters in the book. The same type of writing is seen today in stories of men and women with eating disorders, women of Islam, and fast food workers. We read stories about these types of people that may or may not be true but they shed light on eating disorders, extremist religions, and working conditions.
After college I may need to write academically. I am not sure what career I want but I am sure it will not be journalism. I don’t like asking for interviews, doing interviews, or writing about interviews. I hate to bother people who are probably busy and disinterested in my need for interviews. Writing academically is more enjoyable for me because I assemble all the materials that I can find, spend time analyzing them and collecting the most pertinent information, and then I assemble that information into a piece that informs readers about what I discovered and what it may mean.