The Gunners moved to within a point of fourth-placed Spurs after a slender 2-1 victory over Aston Villa in the Premier League on Saturday.
Arsène Wenger’s side trail Bayern Munich 3-1 from the first leg of their Champions League last-16 tie, but Wilshere believes there is still plenty to play for.
“Our season is definitely not over,” Wilshere told the Sun. “We’ve got a big chance against Tottenham. We’ve got another big game at Bayern.
“It will be tough but if we show no fear, anything can happen.”
Wilshere was also delighted to help ease pressure on Arsenal’s under-fire manager Wenger after losing to Blackburn Rovers in the FA Cup before their Bayern defeat.
“It was a massive win, especially after the midweek disappointment,” he added.
“We take the pressure. I think the manager takes it as well. He stands up for us the whole time. But we as players have to take the pressure on and relieve the pressure like we did [on Saturday].”
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