Sometimes people get sad. It doesn't matter if you are a Christian or not. You get sad because you are human and it is a human emotion. As a Christian, you may struggle with being downcast or disturbed in your soul. Negative feelings are a signal that something is not right between the mind and soul. It is something that you should work out with God, but it does not mean you are a bad Christian.
Sometimes sad feelings hang out in your mental closet making you feel depressed, anxious, or unsettled. When you are passionate or you have a lot of empathy, the negative emotions can feel crippling. Sadness is not need to be all consuming. Feel it, acknowledge it, define it, and work through it.
You may feel despair. It may lead to anger, fear, and depression. However, you can take control in time. The longer it has been in your mental closet, the harder it is to remove and destroy the roots. However, with God's help you can do it. Chemical imbalance is something very different. You should seek a holistic doctor if possible and a Christian doctor would be ideal.
Dark emotions come. They may be difficult, but remember that you are in control of your emotions. Don't let them control you. When your soul is disturbed seek what God is trying to reveal to you. It may be an indicator that change is about to happen or needs to happen. Do not allow anger to settle, become hypersensitive, or become overwhelmed. God is with you in this journey.
You are not worthless or hopeless. Lay what makes you sad and all the thoughts it brings with at the cross. Pray fervently while pouring out your heart to God. Allow the Holy Spirit to counsel, guide, and teach you. Life is hard, but you are not alone. This thing that is causing sadness will pass. Endure and remind yourself that God is stronger than your sadness. Hold onto hope when you are in darkest parts of your journey.
When you are being challenges you can dive into self-pity or place your hope into God. Hope is always there. You just need to see it and embrace it. Trust God to be able to smile in all circumstances. You feel sad and still smile, but smiling will help you feel better. How you talk to yourself will matter in what direction you will take when you are sad. If you allow it, then God will send people to help you during your time of need.
Hold onto Jesus because he is your rock. He will ground you. You will feel your emotions, but he will help you to see clearly through the emotions. They do not have to consume you. Practice telling yourself truth that will make you stronger and feed your hope.
1 Samuels 1:12-18, Psalm 42, 61:1-4, 121, & Matthew 16:13-19