I despise my mom and her hypocrisy.
Could you explain what you mean by your mom's hypocrisy?
She always says one thing and then does another.
If your mom is often hypocritical and you are upset by that, then you should speak to her about it. Don't yell or be disrespectful or she won't be inclined to listen, but point out what you think the problem is in a calm way.
She's just going to say I'm saying this to her because I only want attention.
If you know what she's going to say when you speak with her the beat her to the punch and start the conversation by saying this isn't a ploy for attention, rather a genuine concern. It's worth a shot and she might surprise you and be perceptive to your thoughts and feelings.