LIVE IN A SUIT!

I really don't understand how to invest the stocks and foundations. I was lived in a suit again. My friend told me one stock will be increased from 32 to 90 three months later. According to this reason, I bought one set of this stock. At beginning, the rate was went up from 32 to 40, I sold one set and felt very happy due to earning eight thousands dollar. And the nightmare was coming. I saw the rate was increased step by step till 48 dollars. Then I bought it again in NT$48. And I prayed it could keep increasing. But the rate was decreased while I bought. It's hard to believe it. My friend told me you might buy another one once it decreased to a hold point. Therefore, I bought another one when it cost 36.8. And guess what? The rate was increased to 38.6. I felt so glad due to the increasing. I think that the spring is coming again, and I can cover my lost very soon. Unfortunately, it was fell from the next day from 38 to 32. Somebody could tell me what's going on? I really want to kill myself. I check with my friend about this matter. Then he just left one statement "Never hear any side-street news to invest the stock." Now, I am still living in this suit and wait the securer to save me.