Four Bones

I was in a meeting last Monday where the presenter spoke of the 4 bones that usually make up an organization.
1. WISH BONES – those who always have wishful thoughts but rarely transform into action and rely on others to make it happen.
2. JAW BONES – those who talk all the time but do little.
3. KNUCKLE BONES – those who knock out everything that anyone else tries to do.
4. BACK BONES – those who get under the load and do the work that’s necessary to keep the organization running under all circumstances.
Which of the 4 bones are you?