keep (one) going
To give one enough energy, sustenance, etc., until they get what they truly need or want. Lost for days in the woods, we had to eat bugs and edible roots to keep us going. I am so anxious for the new movie in the series to come out this winter that I'm reading the novels again to keep me going.
keep someone or something going
to sustain someone or something. I try to eat just enough food to keep me going. Enjoying food is just not an issue any more.
ˌkeep ˈgoing
1 make an effort to live normally when you are in a difficult situation or when you have experienced great suffering: You just have to keep yourself busy and keep going.
2 (spoken) used to encourage somebody to continue doing something: Keep going, Sarah, you’re nearly there.