"I took it personal. I got slammed quite a bit"

Steve Carlton, a previous Major League Baseball player, is revealing his emotional response to being slammed. He says "I took it individual", indicating that the criticism affected him deeply on an individual level. He then adds "I got knocked quite a bit", suggesting that the criticism was not just a minor nuisance, however rather a sustained and severe attack. Carlton's usage of the phrase "got knocked" is colloquial and stimulates a sense of strong impact. In general, Carlton is conveying the message that he did not take the criticism gently which being the target of significant unfavorable feedback had a meaningful effect on him.