i'm a proficient worker who is trying prevail at my job!

DId I use '' proficient'' correct?

Yes, you used the word "proficient" correctly in your sentence. It means that you are skilled or competent in your job and are capable of performing well.

I still don't know how to use '' proactive'' correctly! could you please give a example.

Certainly! "Proactive" refers to taking initiative and acting in anticipation or preparation for future situations or problems. Here is an example sentence:

"In order to avoid any potential delays, the project manager proactively identified potential issues and implemented a mitigation plan."

I don't know what initiative, and anticipation mean!, so it's kind of hard to obtain the meaninig

I apologize for the confusion. Let me provide a simpler example using "proactive":

"Instead of waiting for his manager to assign him tasks, John takes the initiative to identify areas where he can contribute and actively seeks out new responsibilities. This proactive approach allows him to make meaningful contributions to the team."

In this example, "proactive" conveys that John is taking the lead and being proactive in finding ways to contribute and improve, rather than simply waiting for instructions.