Some of psychological issues, might be caused by the combination of lifestyle factors: 

• poor sleep 
• bad food choices 
• lack of movement in daily life
• chronic stress and not dealing properly with emotions (especially in childhood, traumas etc.)

Sleep optimization:

• quitting caffeine intake after 12:00 or earlier
• no blue screens at least 1.5 hours before sleep
• sleeping in complete darkness
• adjusting the temperature
• going to bed the same time every day
• no food at least 3 hours prior to going to bed
• alcohol and marijuana are known to destroy sleep architecture

Bad food choices - we strongly recommend to avoid: 

• vegetable oils, except: extra virgin olive oil(EVOO), MCT-oil - which are considered to be really healthy,
• all processed food,
• refined sugars, 
• grains,
• alcohol,

Movement:

• maintaining a daily physical activity of your choice, 

Also, consider taking the following supplements:

• Vitamin D3+K2 (dosage: 5000 UI/day) - anywhere from 50-90% of world population is vitamin D deficient, that varies by country, age etc.
• Omega-3 - as many as 95% of Americans do not get enough DHA and EPA
• Magnesium - 75% of people are not having enough magnesium intake, leading to invisible defficiency
• B-complex, all B-vitamins are essential for neurological system, playing a huge role in our brain chemistry, there is a big chance that you lack at least one of the B-vitamin