I need space from my friend so I am not going to see them for a time.
Why do you want some space and time away from your friend?
My friend's always around bothering me, and I need time for myself.
It's reasonable that you feel like you need some space and time away from your friend. It's normal to not want to be around someone all the time, because everyone needs time for themselves every now and then. I think you should take some time for yourself.
Yeah, I agree. I think that's what I'll do then. I'll just tell them I'm taking time for myself.
That sounds like a good idea. I'm pretty sure they'll understand.  Once you have a break you may even start to miss your friend.