You need life experience, to have something to write about. Once you have it, it’s not that hard to write.
You need real feedback from your clients, to know what they need, to deeply understand them. Once you know this, it’s not hard to write.
You need to go out in order to understand the client.
Finally, you need to live your life, to see and hear the grass growing, so that you can better experience it.
All experiences matter in order to be a better person.
Getting data is hard. Once you have this, writing is easy.