I'm sort of the same -but in the warmer months I road ride (geez, I would get way, way too hot in the summer riding off road). In the cooler months I off road ride. The only times I don't ride are when there is alot of ice or snow on the ground (though I did snow ride for a time, I did lose enthusiasm for it).
To summarize, this has worked for me:
(i) variety -don't ride off road all year, that way when you do, you are *really* looking forward to it.
(ii) if you like cycling, try road riding to get your cycling fix, but also to keep you keen on off road when the weather is right for it
(iii) do a completely different activity to keep a fresh approach (e.g. XC skiiing, snowshoeing if you get snow, running or hiking otherwise).
(iv) when you do ride, try doing your usual circuit backwards. Sounds obvious, but it really can be very different.
(v) vow to cover every single trail in an mtb area.
(vi) try night riding
(v) attempt to cover at least one completely new ride every 2-3 months or time permitting.
By a sort of trial and error, I found the above really work for me. By September I'm really raring to go on the mtb, and by March, I'm dying to get out on the road bike. Don't force yourself to ride, you'll just burn yourself out doing it. I've been doing this for the past 15 years and still look forward to getting out!
Dan Gerous said:
I have a different approach, but not by choice. I ride almost everyday from April to November then switch to snowboarding because of massive snowfalls. And in the summer, varying the type of riding you do can help as others have suggested. I usually start the year with more road riding (puts me back in shape faster while I wait for the trails to dry out), I commute daily on a SS, I have a BMX I use to jump around when I don't feel like going for a long ride or get to trails and throw in a few long hard rides per week on the Prophet.
So now, my bikes are inside, in my bike room, ready for a good clean-up.