Are you the type who jumps into everything you do feet first? Or the type who researches everything before making a move?
Which type you are tells you which way you should approach the craft of writing a story.
Personally, I started out by jumping in feet first but, over time, decided that I put less time and effort into a story if I research and outline first. So I made myself slow down and learn how to do just that.
I’ve never regretted changing methods, but what worked for me might not work for others. So do what feels right for you.