Though I'm not sure I fully understand it, but anyway here it is -
Be proud of the person you are and the person you will become.

For the first part - I suggest: Bí bródúil asat féin

bump (le bhur dtoil)

Yes, I think we can work with that. Perhaps:

Bí bródúil asat féin mar atá tú agus mar a bheidh tú. "Be proud of yourself as you are and as you will be."

Await further input ...

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Múinteoir Gaeilge - Irish Teacher
My "specialty" is Connemara Irish, particularly Cois Fhairrge dialect, but I can also speak Ulster and Munster Irish with native-level pronunciation.
Is fearr Gaeilge ḃriste ná Béarla cliste, cinnte, aċ i ḃfad níos fearr aríst í Gaeilge ḃinn ḃeo na nGaeltaċtaí.
Gaeilge Chonnacht (GC), go háraid Gaeilge Chois Fhairrge (GCF), Gaeilic Uladh (GU), Gaelainn na Mumhan (GM), agus Gaeilge an Chaighdeáin Oifigiúil (CO).

That sounds safe to be. Unfortunately, I am not entirely trustworthy...... so that only counts as half a confirmation!

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I'll contribute another half confirmation ...

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Suddenly we have become a forum of people with serious commitment issues! There's an idea for a tattoo in there somewhere!

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A Temporary one, anyway.

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We'd have to get many, many more opinions before we could be sure!

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And that isn't the half of it (even if I say it myself)