Hi, Stephen - can you tell us anything more about the song, to help us help you find it - phrases from the lyrics, name of songwriter, stuff like that? I'm thinking of a Joan Baez song that goes "one day at a time, one dream at a time" - is that it?
It wasn't listed in the fakebook index I usually refer to, and it's not in my Joan Baez songbook.
-Joe Offer-

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ONE DAY AT A TIME
(Willie Nelson)

I live one day at a time
I dream one dream at a time
Yesterday's dead, and tomorrow is blind
And I live one day at a time.

I guess you're surprised to see me back at home,
But you know how I miss you when I'm gone;
But don't ask how long I plan to stay,
It never crossed my mind;
I live one day at a time.

See that a swallow flyin' 'cross the cloudy sky,
Searchin' for a patch of sunlight, so am I;
I wish I didn't have to follow,
And perhaps I won't in time,
But I live one day at a time.

I live one day at a time,
And I dream one dream at a time;
Yesterday's dead, and tomorrow is blind,
And I live one day at a time.
And I live one day at a time.

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Lyrics verified with recording: https://www.youtube.com/watch?v=Wirt4J7xMq8
Baez recording (at Woodstock): https://www.youtube.com/watch?v=ixUdRQExYQ0