Ill keep this short so some might actually read this. Trying to artificially think positively isn't healthy. In your deepest level you will still be in a state of fear and eventually it will come to surface as even bigger problem. Fear isn't bad, fear is our greatest teacher. We must face our fears but when fear turns in to chronic negativity and hopelessness you have a long lasting problem. But good thing is there isn't a state negativity that you cannot repair and through that grow as consciousness and manifest positive things around you.

The key thing to understand is that even though we have dualistic nature with negativity and positivity, both is required in human experience. Don't fear negativity or fear. It is important to separate what is true and what is illusion. From time to time even the best of us feel negativity but the key is to find inner peace even in hard times. This can come through realization and knowledge of our existence.

This would require about 100 pages of explanation but I hope you find truth in this and do your own research. Fear of complete doom is unnecessary and harmful. Every negative situation and emotion that you can overcome teaches you an important lesson of your very being.

Face the reality as it is. Do not listen anyone blindly no matter how good the message is and you will find the truth. When you find it yourself, can you truly understand it.