Improvement that will take you to next level? (6)
I believe the answer is:
uplift
I believe this clue is a double definition.
'improvement' is the first definition.
(thesaurus)
'that will take you to next level?' is the second definition.
(an elevator or lift going up)
(Other definitions for uplift that I've seen before include "Elevation (of the spirit)" , "Elevate, elate" , "Spiritual elevation" , "Inspire or raise" , "Increase; moral elevation" .)