The phrase "assertive and strong" is correct and usable in written English.
It can be used to describe a person’s character or behavior, indicating confidence and decisiveness.
Example: "In negotiations, it is important to be assertive and strong to ensure your needs are met."
Alternatives: "confident and powerful" or "decisive and forceful."
Van Broeckhoven takes seriously her role as a senior-level woman scientist, advising the young women at her institute to be assertive and strong, which she admits can be more difficult for women than men.
Being tough or, as it's called when men do it, assertive and strong, is good business if done right.
"I'm assertive and strong-willed," she says.
Paulson ultimately got nowhere with the Chinese on crucial issues, and the question is whether Geithner will make any headway with a China that is now more confident, assertive and stronger than it was just a few months ago.
His mid-ranged voice throws just a little Conor Oberst in the mix, though his more assertive vocals and strong falsettos pull the listener off that path pretty quickly.
It feels economically strong, assertive and more coherent at least in its anti-Americanism.Russia has learned to use its vast natural resources to exert power in Europe and beyond.
2. When female surgeons are strong, assertive, and demanding, we are called "bitches" or "ice queens" while the men are seen as competent residents.
Are you strong, assertive and clear about your role as a mother, career woman and wife?
Behavior in this category includes a strong, assertive and confidential tone.
David Gauntlett, author of Media, gender, and identity: an introduction (2002), noted that, despite wanting her lover next to her in the song, Spears' "fans see her as assertive, strong and confident, and an example that young women can make it on their own".
Be strong, bold, assertive and persistent in your tries.
