Sanchez has developed a reputation for demanding a great deal both of himself and his team-mates, an attitude that has led to clashes between him and his Arsenal team-mates.
However it has also enabled the Chilean to thrive in the Premier League, where he is Arsenal’s top goalscorer and leading provider of assists.
His form, coupled with the mere 14 months left on his Arsenal contract, has drawn covetous glances from Chelsea, Paris St Germain, Juventus and Bayern Munich but Sanchez, who was shunted out of Barcelona in 2014 to make room for Luis Suarez, knows how quickly footballers can go from being heroes to zeroes.
“As a footballer, everything you’ve achieved can easily be lost and then you are nobody,” Sanchez told the Arsenal website. “That’s just how life is and that’s why you shouldn’t let things get you down. That’s the reason I treat every match like a final.
“I try to do that in every game – to give 100 per cent. Life is like a pair of scales. One minute you can be right up there and the next really low.
“It’s important to try and maintain a sense of balance and that’s down to the individual.”
Arsenal manager Arsene Wenger said on Thursday that he is confident Sanchez will want to stay at the club beyond the end of the season, though talks over a new deal for both the forward and Mesut Ozil are on hold until the summer.
However Sanchez’s future could be decided in the coming months with the Chilean making clear he wants to prove himself as “the best”. Should Arsenal fail to qualify for the Champions League the 28-year-old would likely doubt whether his goals are achievable at the Emirates.
Sanchez added: “Everything in life depends on feeling motivated, whether you are talking about a child, a family or an individual. In my case my life has changed and improved because different things have motivated me.
“For example in the beginning my motivation was to help my family. Later on my motivation was to be the best.”