Friends, no one, ABSOLUTELY no one, can cause you to fail or hurt you unless you allow/accept it.
I know this statement may cause an outrage because you might be thinking "so when so and so did such and such to me you're saying it's MY fault?" No and yes. Friends, there is a spiritual state I like to call "the law of agreement". It goes this way: whatsoever you allow/agree with/accept, you get. You can agree with something by reacting defensively to an attack(like a verbal threat, or a doctor's report that you've got cancer... etc); or you can mull it over, seeing yourself in a position beneath it; you can verbally agree with someone about it. What you've done there is given that thing power to conquer you, but if you're ignorant of this, I can't say it's your fault. I can only show you otherwise.
Before you go "ah pshaa! I don't believe that!", consider that Jesus taught on this principle: "Verily I say unto you, Whatsoever ye shall bind on earth shall be bound in heaven: and whatsoever ye shall loose on earth shall be loosed in heaven.
Again I say unto you, That if two of you shall agree on earth as touching any thing that they shall ask, it shall be done for them of my Father which is in heaven."(Matthew 18:18-19)
Spiritually when you accept something(verbally and with your mind & belief), you loosed it on earth. Conversly, when you've refused something spiritually(via speaking against it, refuse to consider its "presence"-going about your life like it never showed up, laughing at it etc) you've bound it on earth(physically).
Jesus was a master at this. Notice how he verbally rebuked the storm as if it were a person. All things you encounter physically had its start spiritually. Therefore refusing to give it credence spiritually(and physically!) you're cutting it off at the root.
Notice Jesus also taught that agreement(two or more people agreeing on (the state of )a specific thing, God has set a process in place that allows it to manifest.
Folks acceptance, belief, allowance are all forms of agreement. You get what you accept and not what you don't. Refuse to allow negative imaginations, circumstances, past pain, negative people & media around you to build boundaries in your mind. Refuse to accept failure and destruction. Accept only thoughts of empowerment and life!