Questions about Psychology and being a psychiatrist.

So I'm debating on what I want to study after high school (in grade 11) and have recently been interested in psychology. So I have a few questions: (All relating to South Africa)

• Psychology:
1. Is Psychology a competitive field to get accepted into?
2. Is it worth getting into Psychology in the long run?
3. Is it difficult to get placed to become a psychiatrist?

• Psychiatrist:
4. Do psychiatrists get paid well?
5. Is it a safe job to do? (Regarding patients)
6. Is it hard to find a job after studying?
7. Is this job in demand?

Note: I have researched this field and job a little- but got many different answers, and haven't done a full-on research session since I'm in the middle of exams, and will do when I'm done.