Jeremiah 29:11 - For I know the thoughts that I think toward you, saith the LORD, thoughts of peace, and not of evil, to give you an expected end.
One of the reasons why believers have problems is because it is not only God that has plans for the believers. It may interest us to know that the devil has plans for the believers too. While God had good plans for us, the devil on the other hand has negative plans for us.
We should not be surprised when we experience these things because it is the handwork of the devil. But God is smarter than the devil. So what God does when we are often faced with these situations is to use the devil's plan and turn it for our own good.
Romans 8:28 - And we know that all things work together for good to them that love God, to them who are the called according to his purpose.
As long as you are on earth, troubles will come your way, but God's plan for your life is to use the very problem that the enemy intends for your destruction and turn it for your own good. The enemies may strike first but God has the final say.