They train you to suffer remembering the past and to suffer by the uncertainty than you will be able or incapable to do in the future, dejndote just a short time to enjoy present. The past it is in the majority of the cases a heavy load that you will have to take to hills by always (they acquire the errors to you and they do not recognize the successes to you). The mistaken things that you did will continue hurting and you will pay by them several times. The good things will give the support you, the experience, the wisdom, will allow considerarte you valuable and successful, but to know it everything, it makes difficult to be alert to identify the changes and prepararte to face them. The past it is constituted by events, facts and action that you will not be able to change and that in the majority of the cases is lost use. The paradox is that you suffer when you lose and you worry when desire. If you lose something that you had in your hands, algrate, now is free to receive The future would have again to be supported in a life plan that looks for the profit of your dreams.
The future nevertheless, it is what it oppresses to you more, worries to you that you are going to do tomorrow when no longer you have the things which today you enjoy, you it worries that it will be of You and your family, if something bad happens, and sometimes even if something good happens. Except for the beneficial events produced by the chance, the others that you obtain in the future, will be the product than you do in every day of your present one enters and the date now that you take like reference in that future. He is better to act than to worry.