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 definition and answer are adjectives. Perhaps you can see a link between them that I can't see?
'it's not by' is the wordplay.
I cannot quite understand how this works, but
'by' could be 'at' and 'at' is found in the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
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" .)