There are 3 people in my family. I have been married for 7years and my son was born 4 years ago.

when I was young, my father has tried to be friend with me that I remember.
As my father did, I also try to be friend with my son.
sometime it is not easy becuase I can spend time with my son after work but when I arrive at home, my feeling like getting tired.
I think to be good father is very difficult...

EDIT

There are three people in my family.  I have been married for seven years and have a four year old son.
When I was younger, my father tried to be a parent and a friend.
Now, just like my father, I would also like my son to think of me as his friend.   Sometimes that can be easier said than done, because I'm often very tired after work.
I think it can be difficult to be a good father (sometimes?)...