I can't tell you the number of business plans that have, as a central theme, this huge requirement to change somebody's habits. In the course of discussing this issue with the entrepreneur, it becomes really hard to convince them that changing people's habits - forget perceptions- is a seriously non-trivial task.
A Workflow Example
Consider my previous blog point about Entourage and the back up issues, specifically the lack of what I called proper back up and archive services. While I think it is a seriously bad problem, the Mac Operating System (Leopard) can somewhat deal with the situation BUT there is a habit change.
In Leopard, time machine is touted as basically system wide snapshots of your machine. If the machine is hooked up or connected over the air to a large hard drive, clones of the machine are made in the background on the external device. If something blows up, no problem, time travel back to the time you want and, presto, life is good.
No habit change for Time Machine, just turn it on. Easy enough.
With Entourage, well, that's another matter. In order to get this to all work correctly, you do have a few habit changes. First you have to use local folders (ie pull the data off the exchange server) and second, if you are a laptop guy (the MacBook Air in my case), you'll need to either remember to plug in that USB drive or buy the external device made by Apple which allows you to come home/office and have Time Machine see the device and start backing up over the air.
You can't just take a full snapshot of your machine in the state she is in with the shared/exchange folders only. If you do and then restore to a different time, the local changes get wiped out when you sync with the server as the exchange server always wins.
The Right Mouse Button (aka Secondary Click)
92% of the personal computing world uses, gets, and understands the right mouse button. Currently around 8% of the world is all about every way possible to avoid it. Along comes the gestures in the track pad. A two finger tap = the right mouse click. Brain dead simple, right? I've been showing this to PC folks and virtually all of them think it is an unnatural act. Comments like "that's not it is supposed to work" are repeated to me over and over.
Simple change in the face of big perceptions of what is 'supposed to be the right way.'
The lesson here for you is to watch carefully what habits/perceptions, no matter how small (or in my case how big) have to change when your product or service is used.
They will impact your take up rate.