"I had that thing of wanting to prove I was a tough kid"

In this quote, Scott Caan is expressing his desire to show himself as a tough person. He likely had a difficult childhood or dealt with obstacles in his life that made him feel the requirement to prove his strength and resilience. This might be due to societal expectations or personal insecurities. Caan's usage of the phrase "that thing" suggests that this desire was a strong and consistent sensation within him. It could likewise indicate that this desire was something he fought with and may have even been a specifying aspect of his identity. Overall, this quote highlights the human desire to prove oneself and the lengths we may go to in order to do so.