Stress -
Stress is the feeling of being overwhelmed or being unable to cope with mental pressure.
Depression:
Depression symptoms are persistent sadness or loss of interest. There can also be changes in sleep schedule, appetite, energy levels, concentration, self-esteem and daily behavior.
Anxiety:
Anxiety symptoms are feeling nervous/restless, having a sense of sudden panic or doom, having an increased heart rate, sweating/trembling, and feeling weak or tired.