Carful/Conscientious/Careless/Impulsive  :

careful

cautious

wary

conscientious

thorough

efficient

competent

particular

fussy

conservative

to take care

to look after

to mind

to watch out

to look out

to keep your eyes open

to check

to make sure

to ensure

to take a lot of trouble

to protect

careless

sloppy

inefficient

incompetent

impulsive

rash

hasty

spontaneous

on the spur of the moment

to jump to conclusions

a snap decision