Boring piece I hone endlessly following morning drive (8)
I believe the answer is:
ambition
'drive' is the definition.
(ambition is a kind of drive)
'boring piece i hone endlessly following morning' is the wordplay.
'boring piece' becomes 'bit' (I've seen this in another clue).
'endlessly' means to look at the middle letters (the ends of the words are removed).
'following' means one lot of letters go next to another.
'morning' becomes 'am' (as in 12:00 AM).
The central letters of 'hone' are 'on'.
'bit'+'i'+'on'='bition'
'bition' after 'am' is 'AMBITION'.
(Other definitions for ambition that I've seen before include "Aspiration - goal" , "Strong desire to achieve, fame or fortune" , "Desire to succeed in life" , "wanting to succeed" , "Target" .)