Not linked to fate or outside influences.
The definition of doable is something possible or something that can be done.
That can be managed; controllable, tractable, contrivable, etc.
Find another word for realizable. In this page you can discover 7 synonyms, antonyms, idiomatic expressions, and related words for realizable, like: accomplishable, achievable, doable, manageable, realisable, calculable and provable.