Selfish has a negative meaning. It means you don't care about anyone apart from yourself. A more positive word would be "self-assured" or "self-confident"

we are all a little selfish... it s a bad word...

"Selfish" as a word is neither good or bad. Selfishness as a trait is considered bad. However, sometimes in life it is necessary to be a little selfish.

It is neither a good word or a bad word. It is just a word!

selfish always related to bad but its not a bad word cause sometimes we should be selfish to understand there are few things in our life which we can't share to anyone.