Hello
Welcome to HCM

The symptoms like shortness of breath, lightheadedness, excessive stress are all features of Anxiety. You think more about future, worry about competition, get worried over little things and also you have history of break up. All these symptoms are predisposing anxiety.
Try to relax your self, stop worrying over minor things, try relaxation exercises, yoga, meditation, deep breathing exercises etc.
If not controlled by these then visit a Psychiatrist. Medicines as SSRI, SNRI, Benzodiazepines, Beta Blockers etc. are used in anxiety and have good results.

Thanks
Dr. Seikhoo Bishnoi

Hello,
Thanks for posting a query in health care magic.
From the description that you have stated it appears that you are having an anxiety disorder. The light headedness, short breaths and anxiety are all associated symptoms. You need to seek help from a psychiatrist who can interview you in further detail. He may like to take you up for cognitive behavioral therapy and also start you on either paroxetine, venlafaxine or escitalopram. Clonazepam is also a good drug to reduce the distress. Meditation, yoga and progressive relaxation will also help you. IN the end good diet, plenty of water and regular exercise will go along way in keeping you healthy.
Hope I am able to solve your concerns.
If you need any further details, you can contact me directly by using the below mentioned link:
http://bit.ly/dr-srikanth-reddy
Wish you good health.
Regards,
Dr. Srikanth Reddy M.D.