I suspect you are under stress and working out a problem in your life.
This dream suggests that you are carrying a burden of guilt. You are blaming yourself but you cannot figure out a way to relieve that guilt without putting yourself in a worse situation.
This dream expresses your dissatisfaction with some aspect of yourself or with some part of your life. For examply, you might want to "kill the habit" of smoking, or eliminate your quick temper, or to stop giving in to temptation. In the exaggeration of dreaming, the need to get rid of something is expressed as "killing." By imagining yourself as a separate being, the dream allows you to separate one part of yourself from the parts of yourself you dislike.
When you dream about yourself flying, it only means that you enjoyed your daytime.
Dreams are about the dreamer. If you dream of putting someone in the hospital, your mind is using the image of that other person to represent something about yourself - probably that you are overdue for a medical checkup. On the other hand, if someone else dreams of putting you into the hospital, that dream is about that other person, and in that dream "you" represent something about that other person.
That depends... Mental hospitals are for insane or people with mental disorders, and the fact that you have tried to kill yourself does not necessarily mean you're insane. But you might want to talk with a psychologist or someone else.
the frog will kill you.
That you need a vacation.
It means that the mud indicates dirty things. You dream yourself with mud. This means that you imagine yourself with dirty things.
The psychologist Sigmund Freud says that one of two things might be true about this kind of dream. First, the dreamer, though he might not know it, actually wants or wanted this person (in the hospital) to die. If a man dreams that his father is in the hospital, this probably goes back to a time in eary childhood when he wanted to kill his father. The same is true for a woman dreaming that her mother is in the hospital. Second, the person in the hospital might actually represent someone else, who the dreamer, whether he knows it or not, wants to kill. The person who the dreamer sees in the hospital and the person who the dreamer wants to kill probably have something in common, whether it is a wart on the nose, an angry personality, or whatever else.
It means that you have been the victim of emotional abuse. You need to find a wise (adult) person whom you trust, and tell them about these dreams.
It probably means that you are angry with yourself. The cousins in the dream symbolize the various aspects of yourself, and the many ways that you are too critical of yourself.
I assume you mean Suicide, and that's when you kill yourself.