Perhaps the secret is that Lucy has a unique magical item that is very powerful and dangerous. Natsu keeps it a secret because he doesn't want other mages in Fairy Tail to get greedy or misuse it. This item could be something that was passed down in Lucy's family and she doesn't fully understand its potential yet.
It really varies. Some manga have characters who can keep secrets well, while in others, secrets are spilled easily. It all depends on the story's context and the personalities of the characters.
It really varies. A well-crafted secret in a novel can make it more intriguing. But if not handled properly, it might seem forced or predictable. The key is how the author reveals and plays with the secret throughout the story.
The key is to build suspense. Don't reveal too much too soon. Make readers constantly wonder and guess. And have characters who are cautious and paranoid about the secret being discovered.
As someone who loved reading novels, I didn't have any information about my mother's secret. Mom's Secret could involve many different topics and plots, depending on the novel you read. If you can provide more specific information or context, I can try to provide a more accurate answer.
First, only share them with the most trusted people, like your very close friends who have proven to be discreet. Second, avoid writing them down in places that could be easily accessed. And third, be careful when drunk or in a situation where you might be too relaxed and accidentally let it slip.
To keep your weight gain secret, you could focus on wearing layers of clothing. This not only helps in hiding any newfound curves or added weight but also gives you the option to adjust according to the situation. Also, when it comes to eating more, try to choose foods that don't have a strong smell associated with overeating. For instance, instead of eating a lot of garlic - rich foods in public which might make people suspect you're eating more than usual, go for things like plain sandwiches or fruits that are more discreet.