Your character is you, in some form, that’s inevitable. But remember that your character is NOT you. So don’t get squeamish. Put your character through hell — and have him come out on top — and readers will love it.
1. Choose your poison: family saga, on-going quest, or…?
Think about how you’ll tie your series together. If you’re writing romance, you could create a family of three brothers, and tell one brother’s story in each book.