It's easier to write about heartbreak after you've had your heart broken. You have more material to draw from, you can extrapolate from your own experiences and make reasonable assumptions about how your characters would feel and act.

Speculative fiction is where my heart lies. It's what I read growing up, and it's what I read as an adult.

Elodin looked at me. "What a remarkably honest threat," he said. "Normally they're much more growlish and gristly than that." "Gristly?" I asked, emphasizing the 't.' "Don't you mean grisly?" "Both," he said. "Usually there's a lot of, 'I'll break your knees. I'll break your neck.'" He shrugged. "Makes me think of gristle, like when you're boning a chicken.

If I seem to wander, if I seem to stray, remember that true stories seldom take the straightest way

...it is better to have a mouthful of poison than a secret of the heart.

Over the last month I had pulled a woman from a blazing inferno. I had called fire and lighting down on assassins and escaped to safety. I had even killed something that could have been either a dragon or a demon, depending on your point of view. But there in that room was the first time I actually felt like any sort of hero. If you are looking for a reason for the man I would eventually become, if you are looking for a beginning, look there.

The key to good worldbuilding is leaving out most of what you create. You, as the author, had damn well better know the where all that dragon food comes from, but that doesn't mean that I, as a reader, want to read a five thousand word essay about you explaining it to me. I don't need to see the math, but I can tell by the details you provide whether or not you've thought these things through to their logical conclusions.