Hi and welcome Raziel!
What interesting questions.
Your second reminded me of a book that tackles the question from a different angle - not so much about content but whether or not it will ever be written. Also, once written, whether it will be published.
Alison Baverstock was a publisher curious about why some writers got published and some didn't. Having identified ten areas that seemed important she then wrote a questionnaire and she sent it out to hundreds of writers, published and unpublished. The result was:
'Is there a book in you?' by Alison Baverstock, published by A&C Black
Theres a link on this website to see/hear Alison talking about it:
http://www.amazon.co.uk/There-Book-You-Alison-Baverstock/dp/0713679328
Here there's an an excerpt and further quotes from famous writers:
http://www.writersservices.com/mag/06/Is_there_book.htm
I can sympathise with you about the camera, drawing, etc, as I dabble in all of these from time to time. I don't have any top-of-the-range equipment but they are just such fulfilling activities.
My parner says successful people are those who just concentrate obsessively on one thing. Maybe he's got a point, but for me enjoyment is important too.
Good luck and I do hope you can find a solution to yout practical difficulites. I'm sure there is one.
Sheila
<Added>PS Sorry about the spelling mistakes I just spotted.