Hello everyone!
New American here. Very interested in all Irish Gaelic translations. Please nothing that will create conflict if I ever am lucky enough to visit the Gaelic speaking countries. Maybe not an issue for this word. All dialects, old Irish welcome.
I hope you are having a good day wherever you may be.

Your time, energy, and feedback are greatly appreciated.
Sincerely,
Michael

Normally this would be expressed in Irish as two words: Tarraing Anáil: "Draw Breath."

Wait for more input, please.

Redwolf

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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).

I can "third" what the others said, but I noticed that you spoke of visiting "the Gaelic speaking countries" [plural]. Just in case you didn't know, due to their separate historical development, there are a lot of differences between modern Irish [Gaeilge], Scottish Gaelic [Gàidhlig], and Manx [Gaelg], such that each is considered to be a separate language now, so you should not expect something in one of them to be understood necessarily by speakers of either of the other languages. With Irish and Scottish Gaelic, many words are the same or similar(with some pretty regular spelling differences), but quite a number are not, and even the ones which are similar can have a different pronunciation or meaning due to shifts which took place over time. Manx uses a wholly different way of representing its sounds (created by non-Manx "experts" only a couple of centuries ago), so Manx words usually look very different.

As an example, the imperative (command) form of "Breathe!" in Scottish Gaelic would be as shown here:
Anailich! [If said to one person, informally]
Anailichibh! [If said to more than one person, or said formally to one person]

As you can see, Scottish Gaelic has a formal form of "you" (identical to the plural form). Irish does not make this formal/informal distinction. The choice between the informal and formal forms would be a lot like the choice in French between tu and vous or in German between Du and Sie. For a slogan or a tattoo, it's safe to just use the informal form, though. If you actually said it to someone in Scotland whom you didn't know well, the formal form would be more customary.

A Scottish Gaelic speaker would also understand the Irish form in this case, although it would be:
Tarraing anail [If said to one person, informally]
Tarraingibh anail! [If said to more than one person, or said formally to one person]
Note that there would be no accent in anail in the Scottish Gaelic version. It would probably be understood literally, though, as "draw breath" (its literal meaning in both languages) or it might be thought of as a somewhat formal or old-fashioned way to say "breathe".

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I'm not a native (or entirely fluent) speaker, so be sure to wait for confirmations/corrections, especially for tattoos.

Thank you for your answers! I will wait for more as you suggested.
Michael

Actually, you have three in agreement on the Irish version, and that's what we usually recommend for tattoos. This is a simple enough translation that it's highly unlikely anyone else is going to disagree, unless they want to suggest something which doesn't literally mean "breathe", but which conveys the idea of stopping for a moment to take things in calmly.

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I'm not a native (or entirely fluent) speaker, so be sure to wait for confirmations/corrections, especially for tattoos.