While it's true, the enemy does "seek whom he may devour." That doesn't mean that EVERY bad thing that happens in our lives is the enemy. Don't give him more credit than he deserves.
Sometimes, a bad thing may happen to us and it's actually OUR fault. Yes, perfect little us. (not) For instance, if you go to Starbucks with a friend and drink a bunch of bold coffee and get the jitters later on, that's not the enemy attacking you! You drank the coffee.
If you eat a doughnut every morning for breakfast and gain 10 pounds, guess what? That's not an attack from the enemy!
On the other hand, there are those whom are completely unaware that we live in the middle of a spiritual war. We actually do have an enemy and he does look to destroy. There is a lot going on in the spiritual realm that we don't notice. Out of site and out of mind.
We really need to keep perspective. Be alert. Don't place blame where it doesn't belong.
Be encouraged, if you are under attack or being devoured, we have a Mighty Warrior on our side.
1 Peter 5:8 (New International Version)
Be self-controlled and alert. Your enemy the devil prowls around like a roaring lion looking for someone to devour.