I am 4 lettered word,i challenge peoples confident ,if you embrace me you...

[Ojegbile]

...will fail ,if you attack me you will? ,if you attack you will suceed?what am i?

 

[zappa]

Fear, right?
And umm....why isn't this under wordplay or whatever?

 

[Clackspimon]

teets

 

[ButtErFingErs]

idk.. .....FEAR! wat a suprise!