Sometimes it could be due to the environment that you are in.
The group of friends that you have. If you find yourself
challenging against someone else in your daily task, you are
further prone to have a lower self esteem than one who has nothing
to worry about in the future, who just takes things as it is.
Stemming from the family could be another factor on how free you
are to express your own self at home. If you find yourself
contributing ideas and your own ideology to your parents and
siblings without being "flamed", you are actually encouraged to
challenge your parents heathily. This will then be brought forward
when you go out and hang out with your friends.
But this may change, as your friends may not be like your parents.
And if you assume that your friends are like your parents, you will
most probably end up playing with yourself at one corner...
