alcohol
alone
anxiety
anxious
confusion
crisis
depressed
depression
despair
desperate
disease
disorder
down
drug
emotion
expression
failure
fear
frustration
grief
headache
illness
indoor
loneliness
lonely
loss
mental
negative
nervous
neurplasticity
pain
personality
pressure
problem
psychology
sad
sadness
solitude
sorrow
stress
tension
thinking
tired
trouble
unhappy
upset
worried