"There's no point regretting things. If you can't do the time, don't do the crime. Life's too short to worry about things I've said"

In this quote, Robbie Williams is highlighting the value of living in today and not house on past mistakes. He suggests that regretting things serves no function and rather, one ought to focus on making much better choices in the future. The expression "if you can't do the time, don't do the criminal activity" suggests that one ought to think thoroughly before making decisions and be prepared to face the repercussions. Williams also reminds us that life is short and it's unworthy losing time stressing over things that have actually already been said or done. Overall, the quote encourages a mindset of moving on and releasing remorses.