Hello,
My name is Zoë.
This year a very close friend of mine passed away.
He always told me t follow my dreams, so to honour him and to have him always with me i want to get follow your dreams in irish tattooed. i really hope someone can help me out and can find the right translation.
it will be appreciate

Thank you

In a literal sense, he could use either of these (enlarged to make the accents easier to see):
Lean ar do bhrionglóidí
Lean de do bhrionglóidí
Follow your dreams

The different preposition used in each of those could cause a difference in nuance, but probably not in this context.
I'm not sure whether those would traditionally be used, but they'd certainly be understood. Some other possibilities:

Bí dílis do do bhrionglóidí
Be true/faithful to your dreams.

Fan dílis do do bhrionglóidí
Stay true/faithful to your dreams.

Note that, at least in some dialects, the first "do" in those last two choices would be pronounced as if it were actually "go" or gho".

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

thanks for your reply!
it's already nice to be a step closer

I wouldn't use either of these prepositions.
I'd think lean ar/de do bhrionglóidí means rather "continue your dreams", "persist in your dreams", "keep at your dreams" than to make them true.
I'd use lean without a preposition in the sense of following, persuing.

And I'd use aisling here.
A usual dream in your sleep isn't meant - but a kind of vision, hope or ambition

So:
Lean d'aislingí.
Lean do chuid aislingí.

alright!
thank you so much for your reply!

Please, wait for others to confirm or correct.

i will!

thank you

thanks for your reply! so these are the right translations for follow your dreams?

hello,
so i was looking for the translation of follow your dreams in irish and two people said that this could be the right translation: Lean d'aislingí
can some more people maybe confirm if it's right or not it's for a tattoo and i made an appointment today so if it's not right let me know so i can still chance it.

thank you very much
Zoë