The Aston Villa boss believes the striker, who has failed to score in his last seven appearances, set a high standard for himself following last season's 23-goal haul.
The Belgium international, whose campaign has been hampered by a hip injury, has not scored in his last seven appearances for Villa. After signing from Genk in an 8 million euro deal in August 2012, Benteke went on to score 23 goals in all competitions under Lambert and the Villa boss believes the 23-year-old has fallen below the standards he set in his debut season.
"I'm pretty sure Christian's a victim of his own success, but he's created that himself," Lambert told reporters. "There's nobody he can blame for that other than himself because he set a really high standard for himself and, when you fall below it, that's what can happen. The challenge is for him to bounce back."