too willing to believe or accept what other people tell you and therefore easily tricked
gullible
good at learning, understanding and thinking in a logical way about things;
intelligent
thinking more about the needs, happiness, etc. of other people than about your own
selfless
not given or giving willingly; not generous, especially with money
stingy
estimating people and criticizing them too quickly
judgemental
working hard; busy
industrious
that cannot be trusted
untrustworthy
not confident about yourself or your relationships with other people
insecure
too proud of your own appearance, abilities or achievements
vain
clever at understanding and making judgements about a situation
shrewd