1) The child is naughty .
2) He is pessimistic probably he has had a bad day.
3) He is insicure for a decision.
First person is touchy probably someone has judged.
Second person is stressed for work..I think.
Third person is
I'm energetic, responsible, persevering, sincere, discreet and sometimes dreamy.
First person has a cold, second person has headache and the third has a flu.