Being at ease takes skill and going back to square one (10)

I believe the answer is:

restarting

'going back to square one' is the definition.
(I've seen this in another clue)

'being at ease takes skill' is the wordplay.
'being at ease' becomes 'resting' (I've seen this in another clue).
'takes' means one lot of letters goes inside another.
'skill' becomes 'art' (both can mean a talent).
'resting' going around 'art' is 'RESTARTING'.

'and' is the link.

(Another definition for restarting that I've seen is " beginning again".)

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