honestly, most of it has been said and said again. cops, bad weather, bad choices(regret), strange instances or stints of depression, bad music, and other stuff that just isn't what u want. If u want to have a great roll, make sure you have everything you are going to want to have and experience, whether it be for roll time, come down time, or even the people you are with, and even the music you must hear, make sure you aren't going to a place you won't enjoy. I have been in bad places, but what makes it all better is a good girl/guy to be with and have around. If you can't get this, then make sure you just keep up your happy thoughts, and think about how good it is to be rollin again, and feeling so euphoric and amazing, and how lucky you are to be alive and doing what you are doing. That always helps me out