I is it possible to know if I am bipolar?

Try this screen. Try this online screening tool: http://psychcentral.Com/quizzes/bipolarquiz.Htm.
Bipolar. If u r easily angered and fly off the handle, go thru episodes of severe depression alternating with manic phases where your thoughts race and your speech becomes rapid/pressured, u feel on top of the world & u haven't slept for nights but still feel energetic.