The latest episode of her US reality show The World According To Paris showed the breakdown of her relationship with now ex-boyfriend Cy Waits.
Also under pressure from a fight with friend Brook Mueller, the heiress was emotional in the run-up to her big 30th birthday party.
The episode began with mum Kathy telling her to make peace with Charlie Sheen's ex, who had upset Paris after standing up one of Waits' friends on a date.
Paris said she had enough of her problems with drugs and that it would reflect badly on her.
'It's like a broken record - every week 'I'm going to be fine, I won't do drugs', then she does it again,' she tells Kathy.
'For you it's fine but for me, it doesn't look good… When I'm seen with her at places, people assume I'm like her.'
Kathy tells Paris about how she started to 'disappoint' her with her public scandals.
She says the world then was 'looking at us and making judgment calls... so f*** everybody.'
Paris herself begins to cry as she says, 'I feel like the whole world hates me sometimes. They are so mean. I don't do anything to hurt anyone. I try to be happy, make everyone happy.'