It's not by chance that you put your mind to (10)
I believe the answer is:
deliberate
'chance that you put your mind to' is the definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?
'it's not by' is the wordplay.
I cannot really understand how this works, but
'by' could be 'at' and 'at' is present in the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for deliberate that I've seen before include "Meant" , "Ponder" , "Intentional; think carefully" , "Calculated - think carefully" , "Consider carefully" .)