The striker is happy at the club and says he has appeared in big games regularly which has helped build his confidence.
“I'm fine, I have played many important games as a starter and I'm not worried,” he told the reporters.
The 24-year-old spent the Christmas period in his native Chile but has returned to the Spanish city with the clear decision to continue at the club.
Since joining Barca, the former Udinese man has scored 12 goals in 36 appearances for Tito Vilanova's men, however, has only managed to notch one goal for his side so far this season.
With the four-time Champions League winners falling short of the Liga title last year, Sanchez will be hoping he can help fire the Blaugrana to more silverware.
He added: "I want to stay at Barcelona and help the team win more titles."
The Liga winger has remained in the interests of many teams looking in the transfer market, Juventus in particular.
But Barcelona have already made it clear that they do not think Sanchez will listen to any offers.