I have dependence on marijuana, I smoke at least a dime to an HQ every day (I use a method that makes my weed go faaaar but still keep me high), when Im not at work im High. Period. From the minute I wake up, to getting to work, from leaving work to going to bed. I haven't let it effect my work, which I guess is good, but I strongly believe and have been told by a friend, that marijuana may be causing me to become bipolar. I know for a fact that I have Major Depression. Could either be caused by Weed? Either way I know I need to stop, and I want to, but at the same time I don't know how I could cope with life without it, and I really don't want to quit too. Please advise, as my mixed feelings are tearing me up.