regular exercise is a must,avoiding cigarettes,alcohol and drinks containing caffeine,eliminating food additives(particularly aspartame).
Eat plenty of food high in B and C vitamins,and magnesium and tryptophan.
St john's wort is an effective antidepressant,and herbs such as borage and licorice root.
Vitamin D is very good which is find in the sun,so go for a walk and get some sun if you can,
Superfoods for depression:avocado,banana,beans,green leaves,peas,rice,tahini.
Superfoods for anxiety:apricot,butternut squash,cauliflower,grapefruit,lavender,oats.