It takes a while to get used to a new bike. I've been through it quite a few times. When I wrecked my M900 Monster five years ago and bought an ST2 to replace it, even though both bikes are very similar, I felt that it took about 1000 miles for me to get totally comfortable with riding the ST2.
More recently, I had some wiring issues with my ST2 about the time I bought an XR650L, so basically quit riding the Ducati for a couple of months. Getting off of the XR and onto the ST was like getting out of a sports car and into a huge truck or something. The steering on the ST2 is way slower than on the XR, plus it weighs more than 100 pounds more. But after riding for ten minutes I once again felt comfortable on it.
The biggest difference that I've found is that on the XR I don't need to worry much about my lines through corners and can make mid-corner corrections without thinking about it. On the Ducati I need to plan ahead more and carve a turn.
So in my opinion the only thing you're "doing wrong" is not riding the Monster enough.
Put more miles on it and you'll adjust to what it does well. And I'm sure you'll love the Monster engine way more than the one in the Honda.