self-motivated

US /ˌselfˈmoʊtɪveɪtɪd/
UK /ˌselfˈmoʊtɪveɪtɪd/
"self-motivated" picture
1.

able to motivate oneself; ambitious and driven

:
She is a highly self-motivated individual who always strives for excellence.
We are looking for self-motivated candidates for this challenging role.