As you know that as human we are all having thoughts in our mind some thoughts are positive and some thoughts are negative but negative thoughts are affecting more on our personality and our mind always suffer from fears . Some time fears are too much strong and change our behaviour in a way that we always think that this will harm.
To over come from negative thoughts and fears Meditation is very use full but it is very hard to do it now some harmless Herbal medicines are available to overcome these fears.