yes that's true. it's never a one time event. I think I've done it 5-6 times now. sometimes the idea to continue to do it often escapes oneself. truly feeling your own personal rhythm with the world. taking inventory of who you allow into your life, and how they effect your well being. removing of energies was directed at a sphere and influence of the people around you and the energy of the ones close to you, but I also think it's limitless to anything that you think of. it's has as many layers as you wish and can go as deep as you like.
sometimes you have to walk away from good friendships at times. sometimes friendships are merely drug enabling relationships that are disruptive to your life flow or criminal record...haha. It could be as simple as the color of your bedroom (after 3 years later from an old gf), newly changed diet, work out regiment, making it a point for proper sleep finally, using a smug stick to remove energies from the home, ect... - I once met a woman who would smug her cat every time it went out side...
it's a never ending process of listening to yourself, your feelings, and processing your emotions. every year one should take inventory of who is allowed in their life. all it takes is one person that can attract all types of bad energy into your realm. I've found I gave so much of my energy away for many years. too busy doing things and not listening to ones self. your life is your own - allowing certain people into your your life can/will effect it. life has motions. when you're younger you many feel pressures of life, other people's expectations and views of you, and learning or relearning to live very simple again is also extremely important. becoming congested with the wrong energy make take years to realize the energy you've surrounded yourself with.
perhaps it taken years to get me to a place like this, but I will say in all my years of writing music I've never been more inspirited as I am right now.