Why is stress management important to wellness

>>Being stress free can promote a happier, longer life.
>>It will result a decrease in anger, irritability, aggression, and frustration: sometimes causing increased productivity.
>> It will give your immune system a boost, resulting in lower chances of catching the common cold, or developing chronic/acute illnesses.
>>Side note, stress causes an increase in blood pressure! In other words, stress will result in a lower blood pressure, which in itself prevents various health complications.

Is that a negative 22 or a positive?