Understanding the use of "を貫き通せる"


I have a very brief question, how is を貫き通せる meant to be interpreted in the
following line?

> […]我が道を貫き通せるほど拳が硬いわけでもない。

Dictionary definitions of "貫き通す" includes the following:

>   1. to go through; to pierce; to penetrate
>   2. to persist; to stick to; to enforce (one's) will​
>

I asked a friend who is native Japanese, and she says it should be interpreted
as something like - to make someone "carry out" or "put into practice" -
(though there's a language barrier here so we could be misunderstanding each
other and there's only so much she can teach me in English.) Doesn't this seem
a bit different to the dictionary definitions?

So assuming my friend is correct, how does a phrase like "carry out" fit into
the above example sentence? I can't seem to parse it naturally e.g. " he
didn't really have fists that were so strong it could carry out its own way"
??

So basically how is を貫き通せる being used/it's meaning in this context, and with
that in mind what is a more natural sounding way to parse the above sentence?




Original sentence.

"我が道を貫き通せるほど拳が硬いわけでもない。"

Your translation attempt or:

**he didn't really have fists that were so strong it could carry out its own
way.**

Is it so strange?

**he didn't have so strong fists that it could carry out his own way.**

or

我が道 sounds strange? His own way sounds like the path with no end?

**he didn't have so strong fists that it could carry out his own plan.**

or

I am not sure though, 我が道を貫く might indicate "his own way of doing something."
In such case,

**He didn't have so strong fists that it could carry on something in his own
way.**

