Write--do. Do--write.

If you want to write something interesting, do something interesting with your life.  It is that simple. 

London went to the Yukon.
Kerouac traveled across country.
Twain traveled to San Fransisco.
Melville fished.
Thoreau went to the woods.
Jung built a tower.
Gregory Boyle created jobs for homeless.
And so on.

You can also walk, talk, dance, run, sing, and play in interesting or different ways, which can be worth writing about and the product of which might be some fefu fofu tofu poetry stuff, which is all good and well but my contention is that an exterior change, like Kerouac's traveling, makes for more interest for a reader.

It is this simple: If you want to write something interesting, do something interesting with your life. 

Go.