It’s interesting how karma as a word or concept is being used. The theosophy’s definition is: the cosmic principle according to which each person is rewarded or punished in one incarnation according to that person’s deeds in the previous incarnation.
I’m going to attempt to explain karma in quantumness. We start with all things and thoughts are energy in different frequencies and vibrations. Now add in “intention and attention," along with the law of attraction, to the equation. The amount of attention put into your intention will determine how much energy is emitted out into the universe and how much will return to you. So if your intention is negative or harmful, these types of frequencies are emitted from your body and mind and it will for sure attract similar frequencies back to you. If you go the next step of acting out these intentions, then the frequencies will be amplified much greater than the amount of attention you’ve given to this intention and action.
This is, of course, true for pure and good intentions, attention, and actions. So think and do good and good things will happen back to you and vice versa, right? Yes and no, but that’s not always the case because in quantumness, there is no judgement in energy and frequency, it just flows. Atoms and molecules jump from your body into your environment and back nonstop. So if you carry ill intentional thoughts, you’ll carry this frequency and share it with your loved ones and people you're in contact with subconsciously.
Love frequency is the most highest and powerful frequency and the love shared between people is incredibly strong, so if one carries a negative frequency in them, it’ll magnetically attract and transfer to a person you love and that person will not even know it. This is how tragic things can happen to innocent people. This is the core reason for “bad things happening to good people.” So how can you (given that you’re a good and loving person with no ill intentions and actions) can avoid someone else’s harmful frequency?
Most of us trust our intuition of who has good or bad vibes. But until there’s a mass critical state of higher consciousness in humanity, we can never know what everyone around us is thinking or doing 24/7 right? This is where daily cleansing is so necessary. Meditation and yoga exercise are a great way to reset your body’s energy fields. Your body goes in a subconscious mode while being awake and this will clear all outside frequency in your system. It’s like pouring water into a purifying system.