It’s not worth it  

Used for saying that the value of something does not justify the concern you are showing.

• Celine: Should I get this coat dry-cleaned? The stain isn’t coming out.
• Jack: It isn’t worth it. I only wear it when I work in the garden.

That’s quite enough

This expression is used to ask someone to stop behaving badly.

• That’s quite enough. I don’t want any more rude remarks from you.

I’m in a hurry     

When you are in a hurry, you are not able to wait to do something because you do not have enough time.

• I can’t wait. I’m in a hurry. I must get there in 30 minutes.

When you are not in a hurry, either you have plenty of time on hands or you are unwilling to do something.

• I’m in no hurry to get married. (= I am not interested in getting married at the moment.)
• Let’s discuss your plans. I’m in no hurry to leave. (= I’ve got plenty of time, so we can discuss your plans.)

It doesn’t matter

It doesn’t matter means ‘it’s not important’. It doesn’t matter to me means ‘I don’t care.’

• Vicky: I’m leaving you. Sona and I are getting married.
• Maria: So, go ahead. Marry her if that’s what you want. It doesn’t matter to me.

Another piece of conversation is given below.

• Peter: What shall I do?
• Stella: Do whatever you like. Jump off the roof or give live in the desert. It doesn’t matter to me. I just don’t care what you do.