Crossword Genius

Good run makes one happier (7)

Ross

I believe the answer is:

gladder

'happier' is the definition.
('glad' can be a synonym of 'happy')

'good run' is the wordplay.
'good' becomes 'g' (abbreviation).
'run' becomes 'ladder' (both can mean a rip in tights).
'g'+'ladder'='GLADDER'

'makes one' is the link.

(Another definition for gladder that I've seen is " You get more contented".)

I've seen this clue in The Telegraph.
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