A lot of people get all upset when their past (negative ones) is 'brought up', saying "Don't bring up my past." Well guess what? Most of the time, the mistakes you made in the 'past' is still your present until you find a way to step above it, especially if it still impacts you today. A great general example is dropping out of school. Because you dropped out of school, you can't get the job you want or the college education you want (and you want it badly), unless you pass the GED, and until you take care of the mistake you made, you are still in your 'past' which, to me, is your present, no matter how you slice it. Same thing with going to jail for selling drugs, it will get in the way of you finding a job you want to do, and until you can find a way to be trusted in society again, you are still stuck in your past and that 'past' is still your present. So in conclusion, the past, to me anyways, is when whatever is currently going on with a person, no longer a product or an impact of a decision they made. It means they are truly free from a bad decision they made. You say you can't change the past. Actually, you can, because technically, most of the time, this 'past' you are talking about is still your present. A life lesson I learned.