Pawn Troubles

I have been have trouble with pawns in lately. What happends is that my oppoent gets a pawn to the six or seven rank then I just end up sacking my pieces and then loseing a rook advantage.The pawn they are getting to the end is usually not even a pass pawn. If you have any tips for getting pass a position where my oppoent has pawns and how to get rid of this happending please let me know asap.