single-mindedness
noun/ˌsɪŋɡl ˈmaɪndɪdnəs/
/ˌsɪŋɡl ˈmaɪndɪdnəs/
[uncountable]- the quality of only thinking about one particular aim or goal because you are determined to achieve something
- You have to admire his energy and single-mindedness.
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single-mindedness