shrug it off
To ignore something, not let a problem get you. An effective and mature thing to do when its a situation that can't hurt you and/or is beyond your control.
Sam got the vibe that the two co-workers were envious and didn't want to see him do well, but he knew to shrug it off.
shrug off
to brush something aside, to deny it or minimize it with a shrug
to shrug off an argument
-he said she told him that because she was jealous
-she shrugged it off
-he said she told him that because she was jealous
-she shrugged it off