stop saying i don't know

my ultimate stock phrase. i say it almost as often as i say “like”. i use it to either 1.devalue something i’ve just said when i’m not sure how it’s being received, even though i ‘do know’, or 2. a conversation ender, because i’m too lazy to go find out what the truth/answer/solution to the problem at hand might be; discussing the topic further might lead to me doing some work. i hate hearing it come out of my mouth. it’s a bad habit, and it’s gotta go.