Those who talk about past are dealing with things that can't be changed. It is waste of energy quite irrationally as any selfaware individual know past can only be discussed and not modified. There are also people who talk about tommorow but in not very presperous way such as :tommorow I can start..today is so so tommorow will be better. Rationally you only live in the moment, past has its use in a way to see what we did wrong or well thats it. Future uses only to say I will be productive tommorow or next weeks like I was today or even upgrade on things i did today. For me this is the way how to look on past present and future. Thanks for the nice post sir!