Khloe Kardashian. Picture: Instragram

Khloe Kardashian insisted people are "not responsible" for other's happiness.

The 'Keeping Up With The Kardashians' star posted defiant message on social media as she urged her followers to ditch anyone who wanted them to be miserable for their own sake.

She explained on her Instagram story: "Don't ever feel bad for making a decision about your own life that upsets other people.

"You are not responsible for their happiness. You're responsible for your own happiness. Anyone who wants you to live in misery for their happiness should not be in your life to begin with."

Her words of encouragement come after Khloe, 34, spoke out against a Twitter user who commented on her daughter True Thompson's skin colour.

Khloe - who welcomed her baby into the world in April - wrote in a series of tweets: "I dislike the fact that people are allowed to comment on my daughters skin color but as soon as I comment kindly back and praise her for all that she is, the comment gets erased.

"If you have the courage to post your nasty criticism please allow one to defend or comment back... Everyone is entitled to their opinion's and I'm not complaining about that. please state your opinion but allow me to State mine."

She went on to suggest her own family and "household" focuses on "emotion and action", and suggested the world "can learn so much" from the differences people have.

She continued: "I try to put myself in their shoes &maybe they were brought up in a different type of household then I was. So instead of shaming I try to educate. In our household we do not see color. We see emotion and action. We see love. We feed off of energy.

"We need to learn to praise all skin tones/ethnicities! Our beauty is in our differences. We can learn so much! So proud of every human who is confident in who they are. I'm in my 30s I think I'm just finding this confidence. So I am patient with others. But allow me to voice mine."