YOU SAID:
i can’t believe i just poled my self
INTO JAPANESE
私は自分のことを自慢しただけでは信じられない
BACK INTO ENGLISH
I can not believe that I boast of myself
INTO JAPANESE
私は自分自身を自慢するとは信じられない
BACK INTO ENGLISH
I can not believe in boasting myself
INTO JAPANESE
私は自分自身を自慢することを信じることができません
BACK INTO ENGLISH
I can not believe in boasting myself
That didn't even make that much sense in English.