Try having dreams that predict some terrible fate which will befall a friend, and then try warning them they could get hurt or die... and then, that friend tells you that you are full of shit, and they go ahead and do what the fuck they want inspite of your warnings and they get seriously injured or die.
And you are there to fucking watch it happen.
Pretty useless ability, eh?
"I offer you a Vulcan prayer, Mr Suder. May your
death bring you the peace you never found in
life." - Tuvok.