Simple:
* The company took a proactive approach to addressing customer complaints.
* Being proactive is key to success in this industry.
More complex:
* Instead of waiting for problems to arise, the team took a proactive stance and implemented preventative measures.
* By being proactive in their communication, the team was able to avoid misunderstandings and conflicts.
With different parts of speech:
* Her proactive leadership style inspired the team to achieve great results. (adjective)
* The company's proactive measures helped them weather the economic downturn. (noun)
* The manager encouraged his team to be proactive in their problem-solving. (adverb)
Remember: "Proactive" means taking initiative and acting to prevent problems or achieve goals, rather than simply reacting to situations.