I've had three experiences with DXM. One decent, one alright, and one negative. About a month and a half ago I dosed on 240mg, and reached what I would saw was a mid second-plateau trip, where I felt a mix of drunk and stoned (drunk more so) and was loud and talkative. Then about a week later I dosed on 510mg, where I was on about a third plateau trip, feeling extremely disoriented and had racing thoughts, and couldn't fall asleep that night. Then about a month after that I dosed on 300mg and felt extremely depressed and felt as if life has no purpose. This was a high second to low third plateau trip (yes, I'm really light). That was about 3 weeks ago, and when I was tripping that last time I said that I would never do DXM again. Obviously I still want to, but I don't want to unless there is a high chance of having a positive experience. I was thinking of dosing on about 600mg and playing music that I like and really just looking into life and hopefully looking back onto past memories that I had forgotten about, but I don't want to have a bad trip. Any advice on what I can do to put myself in a good mood and hopefully enjoy the experience? Or should I just not do DXM?