Which types are most prone to have this "personality"?
Incapable to sacrifice and work step-by-step, they want results right away or become impatient, depressed and bored and often give up and change goal. So they are usually shallow and incapable because of lack of hard-work.
For example a person who put a great energy in planning to play tennis, he research the rackets, the strings, in hypomaniac mode, then he takes one or two lessons and lose a match, and he loses interests in continuation.
Or in college he reads a book one or two times and obviosly fail an exam, then he thinks he is not smart enough and want to quit.
And this disposition for a lot of things with high and low.
Childish behaviour? Psychological issues? In MBTI which types comes to mind?
SP? any P maybe? And functions?