Successful man loses the head with God-fearing type (10)
I believe the answer is:
victorious
'successful' is the definition.
('victorious' can be similar in meaning to 'successful')
'man loses the head with god-fearing type' is the wordplay.
I cannot quite understand how this works, but
'man' could be 'victor' and 'victor' is located in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for victorious that I've seen before include "Triumphant" , "winning" .)