confused

Sometimes I feel upset because I always persist in
something which may make the situation to be bad.
Before, I always asked myself not to be so obstinate,
but it is my real nature. I have the reason to insist on
something, but I don’t have the evidence. I have been
known that there must have evidence so that other people will trust you.
I want myself to make change, but my friend told me it is not really bad which you insist on some thing. She also told me that
I can let some annoying thing free so that I may be much happy.
Now I feel good.
In the future, when I have some question which let me feel upset I may try to let it free.