If you take a completely dry sponge and stick it in a bucket of water and soak up all of the water and then squeeze out the sponge, the sponge will retain about 20% of the water. No matter how hard you squeeze the sponge, water will remain in the sponge. The same is true for us. We may think that we are working hard and pushing ourselves beyond our limits, but the truth is that we fail to completely "wring the water out of our sponge." Our capacity for work is seldom met due to our lack of trust in our own effort and more specifically, due to our lack of trust of what God can do through us.
Lord, help me to push myself into that last 20% by seeking your strength.