Crook runs through life energetically (3,4)
I believe the answer is:
con brio
'energetically' is the definition.
(I've seen this before)
'crook runs through life' is the wordplay.
'crook' becomes 'con'.
'runs' becomes 'r' (cricket abbreviation).
'through' indicates putting letters inside (I've seen this in other clues).
'life' becomes 'bio' (short for biography, of which 'life' is a synonym).
'r' going into 'bio' is 'brio'.
'con'+'brio'='CON BRIO'
(Other definitions for con brio that I've seen before include "In music, with verve or vivacity" , "Lively, musically speaking" , "In music, with spirit and verve" , "vivaciously" , "Spirited, musically" .)