How to?

I have been in some disappointment lately.

Due to some expectation over some friends.. and expectation always let us down.
Due to some self-rejection i felt in myself.. whenever i speak.. i feel that i am hurting someone.
I feel bad.
I need to change.

How?

Decide to change?
Take deep breathe before speak?
Love God like crazy and break free from this bondage? ( this is what i learned from the Korean Pastor Daniel Kim yesterday)

mmm.. I need to change. It's not easy, i know. God, please help me.....