Often you have a thought about someone. You feel you want to communicate something, but cannot do this. You then set up an energy (thought) block in the throat chakra. Perhaps you are frightened to open the door to the spiritual part of you. You think about this but do not do it. You then create an energy (thought) block in the third eye or crown chakra.
To give an example of just two areas of blockage: Because it cannot be seen it stays there over earth time – often for many incarnations – becoming more and more angry because it cannot move. You have stopped it by not acting and allowing the created energy to flow. It then turns inwards trying to get back to its creator. But it cannot do this because it is not possible. It is of the spiritual, not the physical, and it needs a spiritual channel to remove it. It has been created; you cannot un-create it except by spiritual healing or divine intervention of some sort such as prayer. All thought is energy, and all energy has to move forward. Just like the human sperm of the male has only one purpose – and that is to fertilize the female – so energy as thought has only one purpose and that is to create what has been thought. Negative thoughts will create negative realities; positive thoughts will create positive realities.
That is how blockages are created. Only the Divine Energy of the spiritual realms can clear these blocks. Through your own bringing in of that energy (if you are not too heavily blocked with negative energy or through someone else such as a healer) the power of the spiritual energy can (if there is the right channel for that energy) shift the energy block and dissipate it until it does, in fact, return to where it came from, i.e.., Universal Energy. Removing this stagnant, negative energy then allows the spiritual body to vibrate at a higher rate (frequency) of vibration.