one day at a time
Gradually or in small, bearable increments, so as to keep some situation or experience from becoming overly concerning or overwhelming. The only way to maintain your sobriety is to work on it one day at a time. The prognosis isn't good, but we're taking everything one day at a time for now.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.