Emotional healing attunements aim to assist in the healing and clearing of negative energies from the emotional body. The emotional body is a complex system that is made up primarily of a specific auric layer but also includes chakras, meridians etc. which all have an impact on emotional energies. You should consider the Emotional Maintenance Attunement as a good starting point if you want to maintain an energetically balanced emotional body. You may also be interested in stress management and calming attunements.
No attunement is in any way meant to replace medical or psychological diagnoses and care. If you are unwell or suspect you may be unwell, especially if you feel emotionally overwhelmed, you must first seek appropriate medical care before considering any attunements. When emotions are referenced, they are not extreme emotions that are up and down or overwhelming but are what you can expect to feel when you are balanced in normal daily situations.