Hi Echo, here are some corrections.  I think it's great that difficult events in your life are making you stronger and more positive. 

lucky

I am always lucky. Today I called to my old friend of from high school. We talked about what are we are up to. I said I am planning to go aboard abroad this summer as a volunteer. He asked me where I plan to go. i told to him Indonesia. He said he adored me because (now he is always swayed by considerations of gain and loss.) After "because" should come the reason he adores you, for example: because of my positive attitude. Because he is "swayed (meaning influenced) by considerations of gain and loss" does not sound like a reason to adore somebody.  Perhaps:  He adored me.  He is always swayed by considerations of gain and loss. I told him the reasons why I decided to do something what I want to do. One thing is that I broke up with my lover, another is that my grandfather is in the hospital. So I think I get have become more mature over the past year. That is why I can firmly decide to do things I like. And He also encouraged me to fighting with everything (Perhaps: to stick up for myself). Yeah, frustration always makes us grow up, to and be more mature, more rational and more competent. Maybe someday you will find (...you are hard work what you want to do all the time) I do not understand. Do you mean:  ...that what you want to do all the time is to work hard?
I ever thanked am thankful for my ex-boyfriend. If not for him, maybe I am would always be a little girl (who is) immersed in love, don’t not knowing what logical or rational is, how to be independent, what rational is and how to live on my own. But now I am not going to don't thank him now.  Because He abandoned me, I walked away out of the shadows by myself without anyone's help. So I should thank myself.
Now I truly like my live life. Its my I'm having the best time since I when was born, and I have a few friends who are have a the same goal. I am lucky that I can make friends with them. Life is full of happiness. Thank god for everything. I will be am getting better and better.