Regarding your dreams, through study, it has caused me to believe that dreams are the building of synapses while we sleep. All day the brain collects information. It stores it up until we sleep. Then glial cells restructure our brain. Any new information makes connections to old accepted beliefs. Any old beliefs get snipped. It’s like a web of information where sights, sounds, memories, and emotions are all connected. This is why if something happens at work, as it is getting filed, it crosses paths neurologically with your grade four science teacher, and an old house you used to live in. There is some relationship but not a clear one. This plays out as dreams. Humans learn allegorically. These are like pages of books, ripped out then bound together creating a new book.
This is important to understand because every experience has emotion, and sights, and smells present which is all information to be filed. If our emotions all day are negative, then usually we have a negative bias on everything that happens. So while the one guy drops his coffee and says, “Ah crap, why does this always happen to me? This day sucks!” The optimistic person drops his coffee and says, “Oh well, I was probably drinking too much coffee anyways. I was meaning to clean this floor for days. What a break!” The point is as your mind rebuilds itself, filing the days events it taps into happy memories not negative ones. You can’t choose what happens to you but you can choose how to react to it. This becomes your attitude, and believe me, it’s contagious. Clearly you are going through some things right now. If you go through your day looking for things to be happy and thankful for, you find them. If you go looking for things to upset you and how stupid people can be, again, you find them. Often this can be in the same situation.
This is how we are “transformed, by the renewing of our minds”. Believing God is with us, and will help us is a good start.