Destiny, luck (4)
I believe the answer is:
fate
I believe this is a double definition.
'destiny' is the first definition.
(I know that destiny can be written as fate)
'luck' is the second definition.
(I know that luck can be written as fate)
(Other definitions for fate that I've seen before include "One's lot" , "Final issue" , "Predestiny" , "What must be" , "Lot -- doom" .)