God is good. But, after suffering abuse, particularly as a child when your brain is forming associations about life and therefore about God, a person can easily be confused and out bid by Satan's lies. Because a person who was abused as a child has a lot of false associations in their brain, it is very easy for Satan to lie to them and for the person to believe the lie, because their is no brain circuitry to support the truth.
If your parents always screamed at you when you made mistakes, then when Satan tells you to obey God or God will scream and hate you, then you are more likely to believe that lie than when the Holy Ghost tells you the truth, because your life experience testifies that the lie is true. The truth in this case is that God absolutely loves and cares for you and He believes mistakes are perfectly acceptable or He wouldn't allow you to make them. A person could even recognize the truth rationally, but still not be able to accept it in his or her heart.
A person who had loving parents who were encouraging and accepting even when he made mistakes, will not believe the lie that God will scream and hate him if he makes a mistake, the person will just know better than to accept the lie as true, because the lie has no bearings in his life experience.
I believe it is fair to ask God to screen out Satan's lies for a time so you can start to develop associations in your brain that are true. We need a time of protection from Satan so we can have a fighting chance to figure it out. When we have done everything we can do, including removing ourselves from harmful relationships and starting to build new ones, it is fair for us to ask God to do the rest. He is a fair God, so if we ask Him to help us, He will. He may or may not lead us to anti-depressants.
A few nights ago, as I have been processing my anger and grieving from my recently realized repressed memory of sexual abuse, I identified that a lot of the discouragement and despair in my life was from believing lies Satan told me because they matched up with my experience. I read that antidepressants could restructure the brain, and God requires it for some people. But in my case, I had already tried them years ago and gotten some benefit from them. I definitely don't want to go back on them for life.
So I prayed and asked God to please restructure my brain for me, because although I know He loves me, I can't always feel His love. I have so much experience with believing and acting on the false truth that even though I know better, I still fall into despair because of the much traveled loops in my brain that really practiced being in despair.
So I prayed for Him to restructure my brain. For example, earlier that day, I dropped a bowl of soup. I immediately started despairing that God didn't love me because something bad happened to me. Even though I knew that wasn't true, I despaired anyway because I was so used to being hopeless over things like that.
Well, as I was lying in my bed still quite awake and conscious, I felt a real pressure in the middle of brain. It was literally where the pineal gland is (which regulates hormones). After about 60 seconds, the pressure lifted, and then I felt a pressure in the somatosensory area in my brain (the area that senses body parts). After another minute and a half, the pressure lifted, and then came down on my prefrontal cortex. I knew that God was fixing my brain. I knew that He wanted to help me erase everything untrue I had believed when I didn't have a fighting chance to believe anything else, and help me overcome the negative thinking patterns.
Today, I had a couple of accidents while cooking. And I was able to be okay with it and not despair, in fact, I was able to be optimistic! For example, instead of getting upset at cutting my finger while opening a can, I was instead grateful that it wasn't worse than what it was, and concluded that God must have protected me.
I think it is totally fair for me to ask God to screen out Satan's lies because they really do trick me. I want to be happy but Satan is so good at tricking me because of my earlier life experiences. Sometimes God needs us to come to Him with a solution for things before He does it for us. So my solution was to ask God to not let me hear lies from Satan that will trick me up, until I have enough truthful life experiences to see through his lies, and also to restructure my brain to remove thinking patterns based upon what I now know to be false.
We can ask God to do this over anything that trips us up. For example, a lot of woman get tripped up over not being allowed to hold Priesthood Keys, and the whole submitting to a man thing. Well, until they understand the truth, they can ask God not to let Satan talk to them about the subject, so they won't be discouraged.
Moroni also explains that anything we believe that is not true brings us to despair. In Moroni 10:22-23, "And if ye have no hope ye must needs be in despair; and despair cometh because of iniquity. And Christ truly said unto our fathers: If ye have faith ye can do all things which are expedient unto me."