Think of a white polar bear. Then give yourself a min or 2 to try harldy to not think of it ? Can u ? Well the white bear effect is like anxiety ! Why does the white bear exist?
In order for us to make sure that were not thinking about something , some part of our brain has to think about it, whitch IRONICALLY keeps the thought ALIVE.
This is especially true when were under whats called mental or congnitive LOAD mentall load just means your conscious mind is working really hard. It can come from having alot on your mind. When stressed or or anxious, trying to supress a thought is even harder then normal and so by trying to NOT think somthing makes it even more likely you wil.