Hi from Germany

During my researches I came over the latin phrase "Memento Mori" (what means "remember that you have to die")
Because I have little relations to the latin language I would like to translate it into gaelic and hope to find help here.
I'm not sure, if its possible to ask something like this here, but:
Is there maybe a special gaelic phrase with a "similar" meaning?
(The phrase shall remember me to fully aware of each moment of my life, because they will never come back.
Especially the good moments, because there will come for sure bad ones.
And at end of life I will not look back and think "why did I have not…" )
To be clear…I do not want a translation of the ( ) stuff…I just wrote it down to explain what I am looking for.
Thank you very much
Andara