Having a good mental health (emotional health) gives you these following benefits:
Decreases:
-Anger
-Anxiety (worry and fear)
-Confusion
-Depression (you’ll likely be better at preventing, reducing, and managing depression)
-Headaches
-Stress and tension (you’ll likely be able to cope better with stress)
Increases:
+Assertiveness (being able to ask for what you need and make decisions)
+Confidence and feeling able to do things
+Emotional stability (less troubled by life’s challenges and disappointments)
+Independence
+Memory
+Having a positive mood
+Perception (better at noticing what’s going on around you)
+Positive body image (feeling good about the way you look)
+Feeling of well-being
+Self-worth and self-esteem (feeling good about the way you see yourself)
Hope this helps.