Wellbutrin and upbeat

I have been taking 100mg of XL for about 6 months, I have been feeling terrible, headaches, jittery, can't sleep, irritable,fatigued all the time. I thought it was neurological, had MRI of brain, spine, etc... I also have ringing in my ears, and don't feel like doing anything. I am usually very social and upbeat, but now just the opposite. I hate this anxious shaky feeling all the time. I am going to stop taking it, skip a dose every other day for a week or two. Does anyone have any advice on how to stop taking wellbutrin?? If so please let me know. I want to get off of it ASAP!!!

I have been taking Wellbutrin generic 75mg for 5 days. Today...WOW!! I feel like I did 10 lines of cocaine. I feel so speedy and upbeat. I don't have any other bad side effects. I notice at night, I feel the need to stretch out my legs because I feel agitated. SO far so good. I think this stuff is a lot better then the SSRI's. I had horrible side effects and suicidal thoughts. My only curiousity is, why would my DR. put me on this if I have anxiety and not depression? Weird. I have an appointment with him today and I think I want to stay on this dose and see how it works for me. I don't want this Dr shrinking my brain. LOL I'm really scared about drinking on this.