J : 點解我係咁"唉"
J: Why am I like that?

Cantonese Sentence Breakdown

點解 dim2 gaai2
(pronoun) why; how to explain; how come;
ngo5
I
me
my
us
we
our
self
hai6
(Cantonese) to be
to connect
to relate to
to tie up
to bind
to be (literary)
to involve
relation
relationship
consequence
yes
indeed
right
gam3
so (Cantonese)
Mandarin equivalent: 这样zhèyàng [这样], like this
ngoi1
interjection or grunt of agreement or recognition (e.g. yes, it's me!)
to sigh
alas