I think it's interesting that both indicate change, but in very different ways. Tower is abrupt and sudden- unforeseen changes. The Wheel, however, is natural and perhaps unconscious change, to the point that no change is really made as its all part of the wheel and it's turns.
If you don't have the slightest idea what this is in regards to, I can only guess that something will come up that might take you aback. It could be something you take personally, however the wheel is a good thing. I think this means that this was actually a long time coming and some part of you knew that. It's something that ultimately was out of your hands, but you'll get the hang of the change quickly and soon enough it will feel as though nothing changed at all. There are some Tower changes that we feel the effects of for a long time, sometimes the tower changes a lot. But in this case, I see you accepting the changes rather quickly and the effects not felt for very long at all.
