But with all that said, here are some thoughts on getting ideas that might be helpful
1. Ideas NEVER come when they're called. They prefer to sneak up on you when you're least expecting them, and I swear, sometimes they seem to work very hard to do it when it is most inconvenient for you. So I don't go and 'get' ideas, I just happen to be there when they turn up ... looking for a host. And part of my host responsibility is being relaxed and open. The harder you search for ideas the more elusive they can be. And if you look at them directly they will vanish, so a sideways glance is always best.
3. The best ideas are born from things that you find fun, surprising, intriguing and/or thought provoking. When I said your mind needs to be relaxed and open, I certainly didn't want to imply it should be empty. Ideas cannot spark inside a vacuum. Read, watch, experience things you enjoy, that matter to you, that make your brain skip and soar and crave. From serious news articles to memes and youtube clips, everything becomes grist to the mill. A little heart melting video of a chicken running to greet a beloved human was the spark for my most recent picture book story. But it was a throw away comment on a friend's facebook post containing a photo of a chicken that truly set the wheels in motion. Now I must wait to see if this idea that made it to the 30% that turn in to complete stories, makes it through to the next round of stories that become books.
4. There is no rhyme, reason, pattern or sequence to any of this. I can go months without a new idea although I am continually trying potential ones on to see if something develops. It is important to not get anxious about not finding something good to write about. As mentioned above those ideas inevitably turn up when you get busy with other stuff.
5. Don't panic if at first your idea does not seem to be whole. When I get an idea for a book it often initially appears as the tip of an iceberg, with a raging (but hard to justify) confidence that the rest of the ice is there under the water. The act of writing it down will usually tease the rest of it out. Sometimes it needs to be lured or enticed. Chocolate and compliments (yes you ARE a beautiful idea) work best.
6. While most of my ideas coalesce in an instant (even if I don't immediately have a grasp on all aspects), there are occasionally some which are slow burners, where something intriguing that I can't quite put my finger on keeps tumbling slow motion through my mind. The fact that I can't shake these thoughts reminds me to give them some space and freedom and to pay attention from time to time to see if they have ripened. There is no telling how long the slow burn might take. It can be weeks, months or even years and should not be rushed.
7. If you want to write, you will get ideas. It is important to believe that this is true because there is no reason why self fulfilling prophecies can't also be positive ones. If you embrace writing and keep your mind well stocked, be confident that the ideas are out there, waiting for you.