No, the extraordinary strength Jeremiah showed during his prophetic career actually came from his full reliance on God.
يَتَّضِحُ مِنْ هُنَا أَنَّ مَا أَظْهَرَهُ إِرْمِيَا لَاحِقًا مِنْ جُرْأَةٍ وَثَبَاتٍ لَمْ يَكُنْ جُزْءًا مِنْ شَخْصِيَّتِهِ فِي ٱلْأَسَاسِ .‏