Stop trying to find a rewind. It's life, not a movie.
别妄想倒带，这是生活，不是电影。
There is no need to go back to yesterday, even we can do that, we may find everything would be totally different then.
If they were the same, I think we may be sure to make the same decisions and do the same things as we had done in the past.
So, there is need to find a rewind and to feel remorse of the past.
The best way to correct the past and to make compensation for the misdeeds is just to seize the current day, seize it tightly, don't let the time pass in the unprofitable way.
When I waste today, I will destroy the current page of my life, in the end there would be nothing left.
Don't let days go by.
Do not let our life slip through our fingers by living in the past nor for the future.
By living our life one day at a time, we will live all the days of our life.
The knowledge of the world is only to be acquired in the world, and not in a closet.
对世界的了解是在世界中获得的，而不是在储物间里。
From Lord Chesterfield.
That may be the very reason why so many people like traveling.
Knowledge can be only acquired concretely through pratice.
Though reading the stories of others may also can bring some knowledge, that is far from enough if you want to make those knowledge embedded in your own soul.
Go out of your own space, no matter it is your room or your field, and to see something else in this world.
Maybe the experience would bring you some different view on your current situation.
Notes about Lord Chesterfield:
Lord Chesterfield is the 4th Earl of Chesterfield, whose name was Philip Dormer Stanhope.
He was a British statesman, man of letters and wit.
He was the owner of many famous quotations.
Despite brilliant talents and admirable training, his life can't be pronounced as a success.
And he was seen as a selfish, calculating and contemptuous man, who often practised in the way of dissimulation.
So, maybe we can't know a man well enough just through his speeches.