This restless mind and unquiet vital are not peculiar to you; they are the human nature from which every sadhak starts. What you have to get is the Mother’s force and grace bringing with it deliverance, peace and Ananda which you say you from time to time experience. That in the beginning does come only for a short time, but as you persist in the path, it increases in frequency and stays longer until it can be made a permanent experience.
Ref: The Mother with Letters on The Mother