All about good karma
Basically, an individual's karma is linked to emotional resonance that is projected or attracted consciously or unconsciously. Literally speaking one attracts what one gives.
The way this individual response and attraction works is the frequency with which it is extracted to form the balance of energies on a spiritual level.
What lies behind it
Each emotional state dictates the people and energies attracted to it. If the positive energy is strong and attractive, then in turn it will attract individuals with the same positive energy.
It is also probably one of the reasons why people are attracted to powerful and capable individuals, rather than to timid and lukewarm personalities. The vitality of karma is the pull factor and those who have this never fall short of positive looks in life.
Sometimes people easily abandon things with the essence of defeated thought, which is not meant to be, not in their karma, but this train of thought is really unfounded. Karma is not a destiny or an immutable fact. Karma is not something to resign oneself to, and it is certainly never beyond the control of an individual.