It is complicated

Sometimes it is not like what i thought, but i will always think in the another way round...friends always advise me, that is what you think too much...Why they don't feel like so? I also wondering, you better tell me the solution rather than ask me, why i will think like that? I have no answer to you...It is really hard to get rid of it...Every single neuron is inside my brain. Every message from what i saw or heard will be sending to my brain, but the output is definitely different with what i saw or heard....sounds weird....What are the mistakes? Is it im too sensitive? Im too selfish, too self-centered, never consider about other people? narrow-minded? Gosh?! what the hell.........