Mimulus is a remedy for nervousness and fear(s) of a known origin.
We harbour many fears -- of death, pain, illness, darkness, flying, heights, ghosts and so forth.
Those who need this remedy will usually keep their fears secret and are often shy and nervous individuals who blush easily and may feel embarrassed or uncomfortable in the company of others.
The purpose of this remedy is to make us realise that we have nothing of which to be afraid. Mimulus fills us with courage and strength to face our fears and participate fully and trust in life.