The process of undoing bewilderment is based on stabilizing and strengthening our mind. Shamatha meditation is how we do that.
The word shamatha in Sanskrit (Tib.: shi-ne) means "peacefully abiding." Peacefully abiding describes the mind as it naturally is. The word “peace” tells the whole story. The human mind is by nature joyous, calm and very clear. In shamatha meditation we aren't creating a peaceful state—we're letting our mind be as it is to begin with. This doesn't mean that we're peacefully ignoring things. It means that the mind is able to be with itself without constantly leaving.