What advantages do you have that others don't have (for example, skills, certifications, education, or connections)?
What new technology can help you? Or can you get help from others or from people via the internet?
Is your industry growing? If so, how can you take advantage of the current market?
Do you have a network of strategic contacts to help you, or offer good advice?
What trends (management or otherwise) do you see in your company, and how can you take advantage of them?
Are any of your competitors failing to do something important? If so, can you take advantage of their mistakes?
Is there a need in your company or industry that no one is filling?
Do your customers or vendors complain about something in your company? If so, could you create an opportunity by offering a solution?
You might find useful opportunities in the following:
Networking events, educational classes, or conferences.
A colleague going on an extended leave. Could you take on some of this person's projects to gain experience?
A new role or project that forces you to learn new skills, like public speaking or international relations.
A company expansion or acquisition. Do you have specific skills (like a second language) that could help with the process?
Also, importantly, look at your strengths, and ask yourself whether these open up any opportunities - and look at your weaknesses, and ask yourself whether you could open up opportunities by eliminating those weaknesses.