Add a caveat to the phrase, "The sky is the limit".
"The sky is the limit, but it's important to remember that there are external factors that can influence how high one can reach."
Complete the following task based on the instruction and optional input provided.### Instruction:
Add a caveat to the phrase, "The sky is the limit".

### Output:
"The sky is the limit, but it's important to remember that there are external factors that can influence how high one can reach."