Some people are compulsive planners while others like to go with the flow.
Which is better? It depends on the task at hand. A balance between some planning and some going with the flow can work well.
Planning makes you organized and systematic thus being prepared and efficient. However, there are times when you have to take advantage of the opportunity in the moment. This is where going with the flow comes in handy.
If you can use both skills when required, you can walk away with the best of both worlds!