We all want to be in that effortless state where we are completely caught up in a task.
In order to be in that state there are a lot of prerequisites that need to be in place.
You need to be in the right mindset.
The environment needs to be right.
The prerequisites for what you are going to work on need to be complete.
These all take work. Figure out the pieces that need to be in place to experience flow and then work hard to put them in place.
With the right circumstances, flow naturally follows.