David Wright is a believer.

The All-Star third baseman ultimately had 138 million good reasons to commit his long-term future to the Mets, but yesterday said negotiations never would have reached that point if he didn't believe the struggling franchise could recover.

The team's general manager, Sandy Alderson, said all the right things to Wright during a "brutally honest" conversation following an October golf outing near Wright's home in Norfolk, Va., culminating in a new deal.

"After hearing the conviction, the plan moving forward, I was all in," Wright said yesterday in explaining his decision to sign an eight-year contract worth $138 million — which includes a no-trade clause — that will allow him to finish his career with the Mets.

Following several weeks of negotiations, the deal was completed early Friday, after Wright and the Mets reached agreement concerning the amount of deferred money in the contract.

What is the organization's plan? Wright, who turns 30 this month, was assured by COO Jeff Wilpon the team won't be sold anytime soon and there will be a commitment to gradually increase payroll while bolstering the minor league system.