take back in time

Today I HAVE TO tell you "How different would your life be if you lived in Tudor England (around the time of Shakespeare)?"But I don't know the Shakespeare Time that's why I will tell you my life.

Now I am thinking if I could turn back the time what do I want to change? This is a very difficult question for me because I don't know the answer...

I didn't do anything wrong and I don't regret what I did back in time.But maybe I shouldn't have any false friends because they affected my success.But when I realised this, I left them.

And now I say fortunately I did. Because it was experience for me and I became more careful.

That's why this is not a very big problem about my past...