i don't know about demons, devils, evil, etc.
but for regular struggles we all feel from time to time
i will recommend the book "Feeling good" by david burns
it is for sale @ amazon- copyright 1980
here is partial table of contents
- diagnose your moods
- understand your moods
- self-esteem
- procrastination
- dealing with criticsm
- dealing with anger
- dealing with guilt
- sadness
- addicted to approval
- love addiction
- workaholic
- perfectionism
- hopelessness
- daily stress of life
the book is about active ways to cope with each of these issues
i have never been in therapy or took medications
some of the stuff from this book helps me keep it moving
coping, etc.
and not dwell on negative stuff