Today's topic is rather challenging since while there are areas I've come a long way in, I still don't really consider them easy. So, I'm not sure there's really an "easiest" part in general. Ideas tend to be least difficult for me. Same goes for dialogue and plot...to an extent. Although, if there's some kind of important "secret information" that needs to be shared and discussed, I tend to scratch my head and frown.
Someone once said "writing is 10% inspiration and 90% perspiration." I'm inclined to agree. I find I have so many ideas for novels and novellas, yet finishing the novel I'm currently working on has been a bit challenging. Why? It involves that large dose of perspiration. Some days I have to force myself to sit down and write, yet I can lean back and daydream for a moment and get the best idea for a new story I've ever had. And they all seem that way when I get them. =)
Okay, back to the subject at hand! Dialogue is enjoyable for me since it allows the characters to communicate and show their personalities through what they do, or don't, say. I've heard many people say they're not good with dialogue, but for me, it's all about listening to the voices in my head. Plot works in the same way. I don't struggle much with it, but I'm still learning what works for me in regards to pre-writing work (outlining, etc). Although, the actual concept and how a piece unfolds forms relatively (note the word relatively... lol!) smoothly in my head. Yet most of the time with outlining, I don't like to know too, too much because it takes away some of the suspense.
Anyways! What about you? What part of writing feels like second nature? Let me know!