To achieve more emotional control is very helpful in meditation. To get mind control during meditation, emotional control is necessary. If your life is free from negative emotions, then these will also not bother you during meditation.
To work with out emotions in Rasa Sadhana, we must be aware of the relationship between our emotions and the food we eat. There is the direct effect of the taste, the second effect during digestion and the third after digestion. Taste addiction and food addiction can be solved through Rasa Sadhana, the Tantric practice of emotional fasting.
Rasas Book Lecture Extract 7 of 22 : By fasting from anger for some time, we learn to control anger in our lives. It teaches us to better manage our expectations, because anger comes when our expectations are not fulfilled. Part of a Yoga class on Rasa Sadhana, the Tantric practice of emotional fasting. See also www.rasas.info.