Lonely and depressed guy was murmuring:

I am useless. Nobody cares about me, everybody hates me, I always fail. I can't do anything, I hate myself, I hate my life, I have no reason to live, I should end my life so I can free from this miserable life.

After few minutes he committed suicide.

Next to his room,

His classmate was depressed. He took a deep breath and calmed down his negative thoughts. He sat on his desk and looked up at wall. "Hey dude, no one is going to push you to your goal, get up and give meaning to your life. You can do it. Just keep doing it. One day you'll be proud of yourself. Now get your ass on work and get started. World needs your talent."

Guy took a deep breath of self confidence and started to work.

~~~

Moral of story: Thoughts are like knife. If you give in surgeon's hand he can save someone's life. And if you'll give in murderer's hand he can kill someone.

Thoughts have both powers to lead our life.