Every one learns from their mistakes what you have learned ?

I have learned that when you have obtained something, don't throw it away easily. like a job, a friend, etc.

I have learnt not to hold my feelings back about people, no-one knows how long we have in this life and to lose someone with out telling them exactly how you feel about them is such a shame, also I have learnt never let angry come between you and a friend for the same reason, we just never know when the last time we will ever see our loved ones, treasures them and tell them you love them...