The life's aim

The life is full of trial and hard.
In this world , there are two things:
negative and positive, unhappy and happy, poor and rich, dislike and like, sick and healthy, and other opposite things.
All people have ever got it.
Usually when we get the good one we never complain and enjoy it very much and forget that someday we'll get the bad one. So if we get the bed one we won't be ready and being frustrated
To be a great people and have a great soul we must have aim in our life.
According to my opinion the aim living in this world is only one, getting the safety both the world life and here after.