Affirmations are suggestions and thoughts that we give to ourselves and can be either positive or negative. As we give ourselves these suggestions, we are feeding them into our subconscious mind, which is what ultimately helps to determine our mental attitude. If we feed positive thoughts and suggestions into our subconscious mind, this will ultimately build a positive or optimistic mental attitude, and when we constantly feed our subconscious with good, and happy ideas, our mind begins to accept these suggestions as reality because our subconscious is unable to differentiate between our imagination and our reality.