Gen 16:1-3
16:1 Sarai, Abram's wife, hadn't yet produced a child.
She had an Egyptian maid named Hagar. 2 Sarai said to Abram, "GOD has not seen fit to let me have a child. Sleep with my maid. Maybe I can get a family from her." Abram agreed to do what Sarai said.

This is an example of not relying on God and trying to do things your way.