Hey mate, I am about to go to sleep for the night but I will write my response now. 
I assume #1 has to do with intrusive thoughts? Like I mentioned, I used to experience intrusive thoughts and they were very uncomfortable and distressing, so I sympathise with you here. However, none of my intrusive thoughts ever happened in reality, it was just my brain playing tricks on me.
The best actual advice I can think to give you is this:
-
I mentioned this earlier, but make sure you are discussing the intrusive thoughts with a mental health professional so they can help you to help yourself. It sounds like you are already doing this, which is great.
-
Realise that you can ask yourself questions and give yourself advice as well. It is not a bad thing to ask other people for advice and input, however, you may become reliant on needing that external validation. Sometimes it seems like our mind may not be on our side, but we can make our own mind into our greatest friend, supporter, and ally. Learning to self-soothe is a huge step in growth and development. It can take time and effort but it will be worth it.
No one is guaranteed a life without sad or unpleasant things happening. That is part of life. Note that does not mean your intrusive thoughts are real, and it does not mean you are causing bad things to happen. But there are tools you can use to distance yourself from the thoughts. Ask yourself things like, is this true? Is this rational? Is this likely, or is it unlikely?
If you have an intrusive thought, try and breathe and centre yourself, and distance yourself from it. “I notice that I am having this thought.” You can use NLP techniques to distance yourself further by changing from present to past tense and changing the sentence structure. “I noticed that I had that thought.” → “I had noticed that I had had a thought.”
I would also recommend EFT which I believe someone else linked in this thread.
One thing that helped me personally as well was focusing on rhythmically repeating a mantra whenever I had intrusive thoughts. In my case it was simply chanting one of the names of God over and over, like YHVH (EE-AH-OH-EH) or AH-TAH GIBOAR L’OH-LAM ADONAI.
This one may also help:
Good luck 