In life, the hardest part is not being a novice; everyone greets the world without experience. Looking back, every step is a mistake, and every year carries regrets.
The painful part is that most missteps are irreparable and, over time, become a thorn in one's heart.
There are times, in a state of half-drunk or half-asleep daze, when one might weep inconsolably and fret deeply, but the past is ultimately still the past.
Perhaps because of the plethora of missteps, even a worthless person could confidently claim that if they could return to the past, they would certainly achieve something earth-shattering.
In fact, if returning to the past was solely to rectify mistakes, that would be one thing; but to forcefully pursue things never attempted before would only add more errors, even if one had the chance to live again.