Change often results in fear. As such, it must be met with strength. Failure to do so can breed panic that only God's strength can overcome.
The Lord is the strength of His people. While it is true that we are called to do our part, God must add the necessary strength to accomplish the work.
Life will present difficult situations. The only viable solution will, at times, involve taking a step back and regrouping mentally, emotionally, and spiritually.
