The more one does, the less one concentrates (6,4)

'the less one concentrates' is the definition.
The definition and answer can be both related to change as well as being verbs in their -s form.
Perhaps you can see an association between them that I don't see?

'the more one' is the wordplay.
I cannot quite understand how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found within the answer.
'one' could be 'a' (a thing is one thing) and 'a' is found within the answer.
This explanation may well be incorrect...

'does' acts as a link.

Can you help me to learn more?