Confusion in usage of In / within

Question

In the given sentence which one is more appropriate between in and within:

The voice __________ you.

If one replaces you with me, which preposition (in or within) will be the most appropriate?
The sentence thus formed is:

The voice __________ me.

Does the word after the preposition affect the usage of the preposition in this case?

user339660 · Answer

For me within is much better but yes, it does depend on the word that follows.

The voice within me
The voice within you

But

The voice in my head

Possibly this is because head is a much more concrete entity than me.

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