For the want of good characters, you don’t necessarily have to be of good character.
Writing gives a curious immortality to people–we remember them as they were, as we wish they were, and taking the best parts of them to make (or remake them) as we will.
Put yourself in the worlds you make–reanimate what may be dead. Rethink what is, to make what was or needs to be. Toni Morrison said that the book you want to read, you must write. To that, I must remind you to write what you want.
Create the people you want. The world you want to see. Write the story you want to leave in the world.
Throw the doors open to your imagination and allow it to speak and profit you.