Which is correct, “think of” or “about”?

 Both "think of" and "think about" are correct and commonly used phrases in English. 

"Think of" is often used when referring to recalling something or someone from memory or considering a particular idea or suggestion. For example: "Can you think of a good place to have dinner?" or "I always think of my grandmother when I smell freshly baked cookies."

"On the other hand, "think about" is often used when referring to considering or contemplating a specific topic or issue. For example: "I need to think about my career goals" or "Let me think about what you just said."

In many cases, the choice between "think of" and "think about" depends on the context and the specific meaning you want to convey.