Try to extract words using slicing, but in a little bit more complicated way. The syntax of slicing is the following:

word[start_index:end_index]

To find the start_index, use the index() method, and to find the end_index, use the index() method, and add the length of the word.

1. Extract the word painful.
2. Extract the word mistakes.
3. Extract the word learn.

If you use all the methods that were explored, this task won't be challenging for you.