What is karma?

We have difficulties to understand what a human being really is, while living here on earth.
Most of us cannot remember our earlier lives, to look beyond the boundaries. That is why we get caught in negative patterns and thoughts. We are affected to a large degree from our former lives, so our judgements in life become negative.
If we make negative statements or "curses" which are meant to hurt other human beings (or animals), we will get stuck in our thought patterns and cannot get rid of them, until we understand where our thoughts came from in the first place and how to dissolve these bonds.
When we want to get rid of our negative Karma, we need to understand why we have functioned in a certain way, and understand that the angels will be there to help.