You may wonder where? I am referring to our minds and the thoughts we create:)
Similar to the manner in which we delete posts, sentences and words on facebook/twitter or word documents, we can also choose to delete the thoughts we create and do not like! This perhaps never occurs to us but it is a possibility available to us. As we assume ownership and the right to manipulate the content that we want to post, we can do the same with the thoughts in our mind.
Lets take a situation: You are driving and look at a fellow driver stranded with a flat tire. You find yourself worrying if something of this sort would happen to you. We all know when we worry and right at this point, you can choose to delete this worrisome thought and replace it with a new desirable thought. It can either be connected to the event/situation you just witnessed or a random pleasant thought that you would like to have in your headspace. Mentally visualize the thought deleted as you would on a computer screen and see it replaced with the new thought. The new thought could be a visual of you always riding smooth or you enjoying your favorite vacation.
The intention here is to not avoid unpleasant thoughts all the time but simply become aware and also know that you can change the thought because even the earlier ‘worry’ thought was created in your own mind. You are the owner and you can change it:)