The striker ruptured his ankle ligaments in November, the latest of a series of bad injuries that have blighted his career at Arsenal, but made an instant impact when he came on during his team's 2-1 defeat at Tottenham on Wednesday.
'The amount of hard work I put in (during my rehabilitation) was incredible,' said Van Persie, who incorporated gym work, swimming and sprinting into his daily routine.
Back with a bang: Van Persie impressed despite Arsenal losing at Tottenham
'I would start at 10am and get home at 8.30pm. Sometimes I was so tired I could not even drive.
'So I had no fear about how I would feel or about my shape when I would make my comeback.
Agony: The Dutch ace spent five long months on the sidelines with an ankle injury
'I just know that if my body is in good shape, I don't have to worry about a thing on the pitch.
'That's why I had the confidence to turn it all on immediately from the first minute I came on.'
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