Try and find a pleasant atmosphere where you can write without distractions.
To me, if you're truly interested in writing, a novel, an article, poetry, anything not required by instructor or employer, it should just be something a writer does. With that in mind, to look for tips on the where or when is kind of...well...silly. No two writers are going to be able to give a definite 'atmosphere' that might be conducive to writing. Some prefer the small, quiet place, without windows or other activities that would draw their mind away from their tasks.
I probably could do with a little less diverting of my attention, but if I were in a small, bare, quiet room, one of two things would occur. Either I would begin to feel confined and so distracted by the feeling I wouldn't be able to write. Or I would fall asleep, promptly. Been there done that. I can sit and write non-stop out in the open, but put me in a room with no distractions and only a computer and I will end up typing something like fk3888aiiinalien'o0wj'j'j'j'j'j'j'j'w9da. The fingers keep moving, doing as they please, as the mind sinks into a stupor and the eyes either close or just fail to register anything.
When I write, I have music playing, sometimes I sing as I type. Its true, right now I am singing 'Let Sun Shine In.' Including all the WHOA LET IT SHINE ON IN(s), along with a bit of head bobbing and shoulder struts. Yup, multi-tasking. To not have music would be horrid. My singing voice is bad enough, I don't even like to hear myself, so the music is kind of loud. I don't always sing to the music, but some songs just drag me in. And I have dogs dotting the floor, who scratch, bark and occasionally paw at me to remind me they are there. The cat has learned to keep away from the keyboard, but that's the only thing she remembers is off limits. When all else fails, she is happy pretending to be a scarf around my neck. My computer sits right next to my window, which looks out on the oasis that I created in my backyard.
Which explains the pictures up above. Talk about distractions! This distraction had an added impediment -- a brand new camera, a nice one. So as this Great Egret (full black legs) is dallying around, doing a little fishing, a little exploring, I am trying out this nifty camera I just purchased. At that moment, I was trying to respond to an email and it took me 30 minutes to get five words typed. But I got some lovely pictures. And the egret didn't seem to mind my presence, so we had a nice chat too. To watch them snatch a fish from the shore is pure grace, to see them dive for a nibble is a comic scene that looks like the flapping, floundering bird might drown. It was fun, even if I didn't get much work done for a bit. I could regret the lost time to write, or marvel in nature at work. I went for the marveling since life is too short to lose any of those precious moments of wonder that come unexpectedly.
My point is that this sort of thing enlivens me, makes me feel more like working at my writing because I feel blessed. It reminds me that the world provides so many little gifts, and if I can find a way to share them through my writing, it encourages me to write more. So its a trade off -- time vs inspiration. I need the inspiration, the stimulation, the distractions. I want to feel alive, not boxed in, when I write.
This may be the very thing that frustrates another writer. They have the story in their mind and when too much disturbs the process, they lose the thread. That is perfectly understandable. But if you want to be a writer, there is no right way, or right time, to write. It will come to each person in its own way. It's not something that a person suffers through at a precise time, in a precise place, so they can begin to become a writer. Writing must come from within. How it flourishes into something worth reading, will come out differently for each person.
So don't worry if you can't come up with the proper atmosphere, and ignore the books that are going to give you time management tips or focusing suggestions. If you need to start there, maybe you ought to find another pastime. Find the books and programs that are going to give you hints how to improve your writing. Read, read, read. Ask for suggestions. Write something. Write in again, see if it comes out better. Read a bit about grammar, maybe even try to recall how to diagram a sentence. That little tedious schoolroom horror is a wonderful way to learn sentence structure. Once you understand the proper structure of a sentence, it becomes easier to spot way to change the structure too. Take the time to learn editing. You don't have to do that for a living, but learning about editing will show you how to spot the faults in your own work. Its not fool proof, almost everyone needs another set of eyes to catch the foibles that most writers cannot seem to lose. Then write some more, anywhere, anytime you want or can.
I guess to me, wanting to write a story might not be enough if a little spark from within doesn't guide you to the conditions that enable you to write. If there is no inkling of compulsion, of the need to write, all the suggestions aren't going to help you move your writing to a different level. If you want to become better, you have to be willing to work at it. It is no different from any form of expression -- without practice, patience and the willingness to do it no matter what obstacles are strewn in your path, all the helpful hints are not going to carry you through. It isn't the most rewarding pastime, it's solitary work, the likelihood of getting rich from it is slender, and, unfortunately, the vast majority of writers will labor on without much recognition or encouragement -- no one is likely to frame a page of your novel like a perfect photo. But if the need to write is there, the when and how will follow.