[stuartcr]

I understand that when there is a second party telling us to do something we don’t want to do...but why tell yourself to do something you don’t want to do? Why even say that? Just do it.

[paguch]

The real culprit appears to work in the Sheriff Department. This is not lack of knowledge of the law it is dereliction of duty or malfeasance .
Where is the Arizona Attorney General on this? The Sheriff office knew this man had mental problems and that he made threats. There needs to be an investigation.

[Titus Quinctius Cincinnatus]

I understand that when there is a second party telling us to do something we don’t want to do...but why tell yourself to do something you don’t want to do? Why even say that? Just do it.

Probably because he's using it as a literary form to address his audience.