I'm looking to get a tattoo.. which is obviously permanent and therefore I really need a good translation. I want to translate
"To thine ownself be true"
into Irish gaelic.
I found this: Bí fíor duit féin

and also this one: Bí dílis tú féin
I wasn't sure which one was right, or if both were wrong. I would really appreciate the help! Thanks!!
- Jessi

The first is grammatically correct, but possibly awkward in meaning.
The second uses the wrong pronoun.

Bí dílis duit féin
would be
Be loyal to yourself
which is what "To thine own self be true" actually means.