You have to understand your enemy!!

We are constantly given choices in life. We have the ability to determine much of what we perceive. It has been said that life is but 10% of what happens to us and 90% of how we react to the events. In other words, much of what happens in our lives has little bearing upon it. What really matters is our perceptions of those events. This is where Satan has his most fertile areas for attack. If we constantly go through life with a "woe is me" mentality, if we are constantly pessimistic and a general drag to be around, how will we be able to positively impact the world for Christ?
If we choose to focus upon our problems and pains throughout our life, we will be less than effective in reaching out to others. We will afraid of being hurt again. We will choose to live in isolation and insulation. Nobody WANTS to be hurt, do they?
It's not like we are the first round of humans to be here on earth. Satan has had thousands of years to hone his "craft". Few of us are gullible enough to believe that he is somehow in charge of things. He isn't usually able to get people to openly renounce God. This is rarely his modus operandi.
He usually attacks much more subtly and indirectly. The most crushing attacks are the hardest ones to openly perceive. If we will not actively turn from God, perhaps we will passively do so. If we can have a doubt, a pessimistic mindset or victimized mentality, we will become weak to other attacks. This is how Satan usually moves. If a Christian can't be turned, they can be rendered uninfluential by focusing on their own pains and issues. If we can be moved to be self-directed and if we can be kept from genuine community and brotherly love, we are made easy targets.
Try watching any program on hunters on Animal Kingdom. Do the predators every go right into the middle of the herd in order to attack the most strong and healthy animals? No way. Predators look towards the outside of the herd. They look for the weak and slow. These animals make the best victims. We really aren't any different. If we stay on the fringe of the community by rarely going to church and rarely becoming involved, we stay weak. If we constantly focus on the negative and the painful, we remain weak.
Remember, Satan is called a roaring lion, seeking whom he may devour. He is a predator by nature. If we remain weak, we make an inviting target. However, if we are strong through continual prayer, love and faith that God will provide and care for us, even when it is tough, then we will be strong. If we stay plugged into our local church and other Christian support groups - such as online forums, etc. - then we stay strong. DO NOT TRY TO LIVE AS A CHRISTIAN ALONE!! Stay connected. Get involved! If we see that God has only our best in mind, we stay strong. If we examine our arrows and attempt to remove them, we remain strong.
In this way, we may do as James implores us. We will resist him. The battle is not our own. Christ is the defender of our faith. However, we are commanded to do our parts. By doing this, we are strong in the Lord and so much less of an inviting target to the enemy of our souls.