The phrase "assertive and ambitious" is correct and usable in written English.
It can be used to describe someone who is confident in expressing their opinions and has a strong desire to achieve their goals.
Example: "Her assertive and ambitious nature made her a natural leader in the project."
Alternatives: "confident and driven" or "self-assured and goal-oriented".
First up was the E. J. Strickland Quintet, drawing from "In This Day," an assertive and ambitious debut.
Countries such as South Africa, India and Brazil have managed to beat the odds, grow their economies, become assertive and ambitious; but most Muslim nations remain backward, oppressive, resentful and hopeless.
All the while, cheering each other on for being opinionated, outspoken, assertive and ambitious.
May described Thompson as an "incredibly challenging, assertive and ambitious woman working in a male-dominated field that she's climbed to the top of".
Women have to get beyond that fear of being perceived negatively--as being pushy or bossy--just because they're assertive, strong and ambitious, because more than anything else, people are judged on their level of competence.
The animosity toward her, said Philip Revzin, a former Journal reporter who is the vice president of the international division, is stirred because Ms. House is "a very talented and ambitious and assertive woman" married to Mr. Kann.
While girl power, the movement that began in the early 90s, has aimed to empower many young girls to be ambitious, assertive, and self-reliant, that girl power as interpreted on TV and in film is slowly but surely seeping into our streets as something more sinister.
She wants women to be admired when they are ambitious and assertive and sit at the table and ask for a promotion, and men to be admired when they do the vacuuming and tell the boss they have to get home in time to make dinner for the kids.
Hughes was obscure and ambitious.
"He is very committed and ambitious.
They were also clearly accomplished and ambitious.
