Hypochondriac
The word "autodidact" is used for an entirely self-taught learned person.
A measure of self confident is how well a person expresses himself/herself in public. You can assess self confident in how a person handles issues.
This person female would be conceited or .... vain, egotistical, self-important, self-satisfied.
A Narcissist
A narcissist.
insecure
You can call a person who knows what they want assertive, decisive, or self-assured.
The person that suffered of mental disorder and hurts himself is called "self-injurer"
self conscious,
self-centered
Self esteem is how you feel about yourself and esteem is how you feel about someone else.
An autodidact person is a self-taught person; an autodidact person is a person who taught himself or herself a subject without any formal education or help from a teacher.