Welcome to HCM. It appears that you have been suffering from some kind of phobia
since 6 months. It is good that you have realized that the fear you experience is not reasonable. Sometimes fears and phobias arise due to some incident in the childhood, the fear may develop and present as phobia in adult life.
Don't worry, just learn to take control over the things that cause your heart to beat. Avoid staying alone at night, try to challenge the negative thoughts that cause you restlessness
in a regular way will help you get relaxed. Yoga and breathing exercises will help you stay cool and take control over the fear.
However, if you think things are not improving, talk to a counselor/psychiatrist
. Probably you may be suffering from some type of personality disorder
that needs immediate attention, the type and degree of the fear and phobia should be assesses and treated accordingly.
Treatment in time will help you stay healthy both physically and mentally. I am always there for you. Take care.