Here's where I'm at 
I work FT in a not very stimulating job. Last year, while recovering from major surgery and very bored I decided to write the proverbial book that was in my head. I knew it would be aimed at around 5-8 year olds (having a now 8yr old DS myself). It was quite short (but would have illustrations which I haven't got as the best I could manage was a stick person) but with a moral/tricky situation which is resolved fairly type theme. Then I thought, well, if I can cover that aspect of life, I can cover this aspect in a further book with the same characters etc. So now I've written three.
I sent it to two agents that deal with children's books last year and got two rejections but no feedback. I'm not precious about it, that's life etc. And since then, it's been on the back burner as life has got it in the way with further issues I won't bore you with.
I think I could be a "writer" but had kind of earmarked that for retirement indulgence. And yet, I think it could be a good series and a TV series
So this competition grabbed me, though not for long.
I don't have an awful lot of free time though or at least, not to invest in my possible whim. And I know that indicates a lack of "seriousness" which is perhaps true being as it isn't my vocation.
So, here I am. I guess I was kind of hoping that it would be as easy as getting accepted by an agent who saw what I saw, got accepted and I could retire to my beloved Greece 
All advice welcome but, from reading, I think I have to exhaust all agents? Can't afford to self publish though that may change in a couple of years. Which, again, is a long story! Perhaps it would make a good book....