Rather unfortunate about your topic that ur pastor now preach Prosperity instead of Salvation. First every man with his own calling. if u are called by God to preach Prosperity don't venture preaching something else. Also if you are familiar with the bible (Zech. 1:17) Please read it.
Moreover if your church does not change you, kindly change your church. Every one will stand alone on the day of Judgment. Don't try to criticize your pastor (go and ask Aron and Miriam.....)
In conclusion, THERE IS NO LASTING PROSPERITY WITHOUT SALVATION. Don't be deceive everyone prays for prosperity even God's which for you is Prosperity  (3 John2). Repent and Give ur life to Christ. Also ask forgiveness from God and from your Pastor. Take care.