to go down the memory lane reflecting on my past mistakes¿

cast back to one's past mistakes (?)
https://www.merriam-webster.com/dictionary/cast%20back

Tatiana, GO DOWN MEMORY LANE is an enjoyable thing when you meet old friends and remember the old days together.

I think REFLECT ON PAST MISTAKES is enough. I don’t really know what the Russian implies.

Grumbler, I’ve never heard that expression and in all fairness, I googled it in the first person and got no results: https://www.google.com/search?hl=en&sxsrf=ACYBGNQS5gv9OtUlMzchBB-4P0-mODcoWQ%3A1579213618868&source=hp&ei=MuMgXtCuMoG6sgXYtbpw&q=%22cast+back+to+my+past+mistakes%22&oq=%22cast+back+to+my+past+mistakes%22&gs_l=psy-ab.3..33i299.1231.9396..9662...6.0..1.265.4753.2j31j3......0....1..gws-wiz.....10..35i39j0i131j0j0i30j35i362i39j0i67j0i10j0i22i30j33i22i29i30j33i160.oKb1PeaBDeA&ved=0ahUKEwjQj5mWlYnnAhUBnawKHdiaDg4Q4dUDCAc&uact=5

А, хорошо, буду знать! Предаваться (приятным) воспоминаниям. 😉

It just means thinking about your past mistakes.

перебирать в памяти means browsing through things in your memory one by one, like browsing randomly through photos

cast back - I've never heard it either, but without "past mistakes" there are some results.

Then my translations are good.

CAST BACK literally means THROW BACK to me - I don’t see what this has to do with this post. Unless they mean to throw them out of your mind/conscience.

Thank you!

👍🏼