Well, 'Soul Land' could be similar. Both have elements of adventure and personal growth in a fantasy setting.
I think 'The Secret of Angel' is somewhat similar. It has a similar theme of self-discovery and destiny.
I'm not sure specifically which 'My Own Destiny' novel you are referring to. There could be many novels with this title. It would be helpful to have more context, such as the genre of the novel (e.g. romance, fantasy, etc.) or the time period it was written in.
Sorry, I don't have the specific name of the author of My Own Destiny manga at hand. But you could try searching on popular manga databases or asking in manga enthusiast communities.
One way is to search for the book title on popular book - selling websites like Amazon or Barnes & Noble. Usually, the author's name is clearly stated there along with the book details.
You might like 'The Second Wife'. It shares some similarities in terms of family dramas and character development, but it also brings its own fresh perspectives and storylines to keep you engaged.
I'd recommend 'Solo Leveling'. It shares the adventure and power-up themes like in My Kingdom. Both have engaging storylines and interesting character developments.
It's a heartwarming story about two people who are brought together by fate and go through various ups and downs in their relationship.
The 'My Wizard My Destiny' manhwa tells the story of a person with magical abilities who is trying to navigate a complex world and figure out their place in it. It's full of exciting twists and turns and character growth.
You might like 'Solo Leveling'. They both have protagonists who face challenges and grow stronger over time. The storylines have that adventurous and thrilling feel.
I'd recommend 'My Secret Romance' as it has similar themes of love and redemption like Saving My Sweetheart.
I think 'Love Alarm' could be similar. It has a similar theme of romance and online interactions.