"traces of my life" seems an odd thing to say here. "I have been thought much from them" is ungrammatical and I am unsure what you mean by it. "being" is required in (1), but " these being traces of my life" may be more likely.
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I thought "much of" can be positioned before a countable noun; I'm so sorry.
(2) should have "many" not "much".
I'd like to know the why. please enlighten me.
"being" is required in (1)
park sang joonI'd like to know the why. please enlighten me.Sorry, I can't think of anything enlightening to say by way of explanation. "I have made a good many mistakes throughout my life, they traces of my life, ..." just doesn't work (or is an extremely difficult stretch).