How to Create Spells that Work
The most basic principle behind magic is belief. The scientific community calls this the placebo effect. For those not familiar with what a placebo is, I will explain. A placebo is a term used to refer to anything that one believes holds a certain power or will cause a given effect. For instance, a sugar pill that a patient is convinced is actually a new experimental cancer drug. It is well documented that people have been cured, given relief of symptoms or had other effects applied to them off of belief in the "power" of a "drug" that was in fact just a sugar pill. It is standard to use placebos as a baseline in drug studies because of the level of effectiveness belief has.
The second principle I will introduce is universal energy flow. It is not confusing and is very simple. Energy is what constitutes everything. Energy has infinite forms and is always on the move. Even a solid object setting on a table is actually in motion macroscopically and microscopically. The galaxy is soaring through empty space therefore nothing within it can be actually setting still, as a simple example. Microscopically, energy passes via radiation and induction in countless forms. The static forms of energy we call matter, control energy flows through and around themselves each in there own way. The nonstop flow of energy from everywhere to everywhere is what I am referring to as universal energy flow. This flow can be tapped in some ways for information and personal power. Imagine it like pulling on very tiny strings to catalyze a desired butterfly effect.
You may ask how it is possible to affect anything at the microscopic level within yourself, let alone your environment. The key is the third principle, Personal Malleability. Every life form has one thing in common. It begins as a microscopic construct and grows from there. You are a macroscopic structure of microscopic parts. All of these parts are tied together via the nervous system, which is the fastest and most efficient way for our bodies to conduct information exchange. It is possible to alter ones own form and function with time and thought alone. Eye color, height, weight, pain thresh-hold and anything else you can imagine are possible although from frustrating to extremely difficult to change. Basically the less you want to change the easier it is. You have to put the energy in to get the results out. Now, to get results outside of yourself, you have to "create" the results inside first. You need to believe the desired result is coming. Religious persons can thank their respective Deity for the results in advance. You can use any form of tribute or ceremony that you "know" is going to help. The more time you spend "doing something" the deeper into your subconscious the pattern can be laid.
The second part of the energy issue is living energy forms. It is possible through belief to create a living energy form. The more people believe in it the more powerful it becomes. This is the reason every religion can say "hey, look what my god/goddess can do!" so choosing pre-existing energy forms that already have followers and bases of power would be very beneficial to your goals. In short, if your gods OK with you owning a car ask for their help getting one. It helps. Go figure.
The genie's curse. ever heard of it? Well, it's a thing we do to ourselves all the time. We believe that if we ask for a million bucks then we will probably get trampled by the first one when the herd stampedes. Basically we fixate on the darkest interpretation of our request because that is what modern society has taught us. This isn't a principle of magic, this is psychology here. Avoid it. You are the one sending the energy pattern out into your surroundings for them to resonate with. You create the pattern within your mind and cause your environment to attract and repel according to your design until everything pops into place and you are where you want to be. This is not the work of any being other than yourself, unless you want to include your god/goddess in on it.
Magic and religion have a thousand flavors because there are infinite ways to do magic. Make your own, or go with one that already exists. The real key is to remember to use your intrinsic abilities responsibly and morally.