If you have ever lost something,
If you have ever broken anything,
If you have ever been hurt by someone,
Will this still be a problem in five years?
If not, then why should it be a problem now?
Has anything happened 5 years ago in which you were angry, sad or hurt in that moment?
Do you still have the same emotions five years later?
Will you still have the same emotions about your current situation?
Does thinking about the current situation make you think about another situation which you have forgotten?
If you don't remember, or it takes the same situation for you to remember previous situations,
If you know that in five years time you will not have as powerful of a feeling for said event, or if you know that you just won't care,
Might as well not be angry in the present.
Might as well not be sad in the present
Might as well not be hurt in the present.
If your problems won't be a problem in the future...
Why worry about them in the present?
Project yourself in the future,
Most things are just minor inconveniences,
It is of no use to get angry in that present moment,
If you will not be angry in five years
As anger serves no purpose.
Keep your calm as all times,
No matter what the circumstances may be.