Hide their mood

-Depressive people are good at hiding their feelings, so their mood swings are rarely obvious since they can easily fake a smile.

They search for meaning

-Depressed people anxiously search for the purpose in life, and are often obsessed with existential questions.

Irregular sleeping patterns

-Depressed people often battle with insomnia or spend their days sleeping.

They are pessimistic

-Intelligence often goes hand in hand with depression, and depressive people are good at solving problems, but they tend to be pessimistic.