Get some sleep and start eating correctly First, God provided rest and nutrition. Elijah was physically exhausted, for he had combated paganism for three unrelenting years, he had waged a very vigorous war on Mt. Carmel against the prophets of Baal, then he had prayed with exceeding earnestness. Atop all that, he had run a marathon back to Jezreel. He had taken time for neither rest nor food, and he was physically, emotionally and spiritual exhausted. When we grow physically and spiritually exhausted, we have less control over our emotions.
Depression descends more easily.
Worry grips us more doggedly. Temptations catch us unawares. God made us to require eight hours of sleep, more or less, and a solid intake of wholesome food. And if we persistently work ourselves into a state of exhaustion, we'll suffer the consequences. So the Lord provided a broom tree under which the exhausted prophet slept, and he provided hot baked bread and very cold water to nourish his drooping body.