Communication

I was thinking about communication and the constructive and distructive factors that impact on it.
If you know how to communicate you may start a good relationship and if you don't know you may destroy it all at once.
But how to communicate? What are those distuctive factors we need to avoid when we communicate? How to make a good relationship?
Why do you start a relationship of any kind? what does it bring to your life that you have made it happen?
Take a paper and write down some of those reasons? Is there anything else? Yes/No? What?
Can't start writing? Need help?
Think about the moments you're alone, it happens for all of us in many times,regardless of who we are,what gender we have,....remember the first time you start to communicate with someone else,why did you begin to communicate?
Remember your best friend and the time you've spent with him/her?
What did s/he bring to your moments?
Now think about someone who you don't like to spend time with, what s/he bring to your moments?
How your feelings are different when you're in those moments?
Write down those two extreme scenarious in different sides of a paper sheet then compare them.
Ask from 5 of your friends to do the same, how similar they've replied?how different?
What factors are the same?
how are you going to bring those factors in your relationships?