One who has their stomach in their hands will not go hungry.

What it means
To hold your stomach in your own hands is to provide for yourself. The proverb says that a person who works and relies on their own effort will not go hungry.
Igbo · West Africa
Source and context
From: Igbo, West Africa
Source: Igbo proverb; documented in nzukomba.com's "The Best 20 Igbo Proverbs for Success"

The source explains it: Hard work and self-reliance are key to achieving success and avoiding failure. The wording of the meaning is ours.