However, it's so much easier to blame someone or something else for our actions. Abusers will try to say that they were provoked. Rapists will try say that they were seduced. Businesspeople will try to blame their unethical practices on the "way the system works." People will blame alcohol, drugs, and even society for their actions. On a smaller scale, how often do children try to get out of trouble with the argument "They made me do it"? All of this is an attempt to absolve ourselves of responsibility, something that Jesus says is solely on our shoulders.
This doesn't mean that circumstances cannot affect our behavior. As humans, we tend to react to the situations that present themselves. Rather, Jesus is telling us that we need to work on tending to our own souls so that we can better face the world around us. We cannot look for items of the world to purify us, that must be an action that comes from within.
"The devil made me do it" is not a defense that Jesus would support.