For many people, remaining optimistic and feeling positive about themselves and their lives is a constant battle--especially when circumstances are difficult and life is hard. For others, negativity is something that only sneaks up from time to time, yet still wreaks havoc in their hearts. Regardless of the root causes, once pessimistic thoughts permeate our minds, our feelings and emotions begin to control us instead of us controlling them. Eventually it doesn't seem possible to stay positive, happy, and full of joy, and negative thought patterns shake our faith, causing us to sink...