Getty ImagesRitabrata Banerjee'I'm an addict' - Cristiano Ronaldo reveals secrets behind his legendary career with Portugal icon still scoring aged 39C. RonaldoPortugalAl Nassr FCCristiano Ronaldo revealed the secret behind his illustrious career and what still motivates him to keep scoring at 39.Article continues belowArticle continues belowArticle continues belowRonaldo revealed secret to his successful careerRecently crossed 900-goal markPortuguese star addicted to football Article continues below