Thoughts are real and have physical properties. Your thoughts release chemicals and electrical transmissions into your brain. Positive thoughts will help you have effective actions and relationships, but negative thoughts can poison you and even make you sick.
(Change Your Brain, Change Your Life by Daniel G. Amen, M.D. Chapter 4)
Philippians 4:8 tells us to think on the things that are true, honorable, right, lovely, admirable, excellent, and praiseworthy. The first thing mentioned in the above sentence is truth. Free yourself from negative thoughts by examining them. You will often find that they are not telling you the whole truth. Learn to challenge your thoughts and talk back to them.
When you think with your feelings you often base your thoughts on memories from the past and they lie. You may even begin to predict your future based on past experiences and negative thoughts. For example, people who have been bitten by a dog, often fear dogs for the rest of their lives, but the truth is that many people safely have dogs for pets. It is important to learn from past experiences, but do not use them to predict your future.
“…the truth will set you free.” John 8:32
“A cheerful heart is good medicine…” Proverbs 17:21 NIV
Philippians 4 also tells us that we can guard our hearts and minds with joy and by giving our worries to God in prayer. The only way to God is through Jesus Christ. Read John 14:6 and John 3:16