Now Sarai, Abram’s wife, had borne him no children. But she had an Egyptian slave named Hagar; so she said to Abram, “The Lord has kept me from having children. Go, sleep with my slave; perhaps I can build a family through her.” Abram agreed to what Sarai said.
Genesis 16:1-2//

When things do not happen in our timing, our tendency is to blame God and take matters into our own hands.