Lucky rock

My rock of luck is useful
It assures luck at all times
Also it makes me exited
When I look at this I`m happy
Sometimes it lets me be eccentric
It’s a fantastic rock for me
It helps me not be shy with friends
It helps me overcome my fears
It’s also helpful to all
Used to stand up to bullies
I sometimes use it to be happy and crazy
And I use it to be calm