People have varying sets of imagination when it comes to thinking about the past, present or future. Some are preoccupied with the future, and some stuck in the past. Both tend to forget to live in the present or, say, live for the moment. Thinking is a process where an individual cannot control the flow of thoughts, which in a way makes them keener to get the outcomes. Thinking about the past can be of two types – introspection and rumination.
