When it comes to describing someone who is driven and enthusiastic about their work, "self-motivated" is a common term used. However, there are plenty of other synonyms that can be used interchangeably. For example, "self-driven" or "self-starter" both convey the idea of someone who takes initiative and doesn't need outside motivation to get things done. Other words that convey a similar meaning include "ambitious," "goal-oriented," and "determined." All of these terms describe someone who is focused and dedicated to achieving their personal and professional goals. Ultimately, the choice of words comes down to personal preference and the context in which they are being used.