Don't you every start wondering, what if I could take back my mistakes made in life? The smallest detail could mean the biggest thing if you allow it to unfold
well regrets are percieved to missed opportunities, so if it relates to that then yes
Without regret then we could never learn from our mistakes. For some it is much more harsh than other.
intensity varied over time for decisions so you maybe you will come around  
Hopefully I do and then I will be able to realize what regret rally entitles
Regret
Regret is a negative conscious and emotional reaction to an undesirable situation. 
Regret is related to perceived opportunity. Its intensity varies over time after the decision, in regard to action versus inaction, and in regard to self-control at a particular age. The self-recrimination which comes with regret is thought to spur corrective action and adaptation. 
In Western societies adults have the highest regrets regarding choices of their education. 
Definition.
Regret has been defined by psychologists in the late 1990s as a "
story] at all, actually, I thought it was rumor, [...] but hey, I think we're all entitled to follow our dreams. And if that's part of her dream, then go for it. You know? I wouldn't resent anybody for trying something new and you never know what could happen. [Kim] could discover that she has a new passion." 
In an August 2014 appearance on Bravo's "", Kardashian stated that the biggest regret in her life was recording