"Normal" is 'common' and does not necessarily imply "Healthy" - Performing Emotional Curve work plotting within a graph positive and negative experiences related to the vertical scale [+10 & -10] along a horizontal line of time that can be over days, weeks, months, or years - the line of emotional experience will tell if your experience is trending positive or negative. Typically there is a balance with manic/depressive values occurring above +5 and below -5 and a healthy range between +5 and -5.