I have been feeling dizzy, light headed, and occasional chest pain. my heart starts racing at random times. this has been months if not a year.

Cardiac arrhythmia: Please be seen by your PCP for a Cardiology specialist referral to rule out cardiac illnesses such as arrhythmias. It would be helpful to have a Holter or event monitor done if your ECG is normal. In the meantime, avoid energy drinks, other caffeinated beverages, and decongestant stimulants. Please go to the ER immediately for chest pain or pressure, shortness of breath, feeling lightheaded.

Have you been seen?: If you've not been seen by any doctor then, I highly recommend and urge that you get seen for a preliminary examination to make sure nothing of an organic nature (especially cardiac wise) is possibly contributing to your symptoms. If all that comes out cleanly and your blood work and chemistries are normal then, what you are experiencing for me sound like an anxiety or nervous reaction. GL.