RoadRaven - I'm not saying I can't do it; I'm saying I don't like to do it.
And the difference is? (Yes I realise you're physically capable of training, but if you lack the motivation, there is no difference).
As someone who's recently struggled with motivation (or lack thereof), I can certainly relate, but I think you have to start by being honest with yourself and concentrate on WHY you want to train and the specific goals you're aiming for.
Without specific goals, you'll never find the inspiration to do something you dislike.

Unfortunately there isn't a quick fix for power and strength without putting in the legwork.
I realise you know this, but RR's right - a change of attitude is definitely the first key. Concentrate on the positives, your goals. Trust me, concentrating on the negatives will never get you off the starting blocks (I know, I've been there) - and sometimes a complete change of attitude is better than baby steps - it's as much psychological as physical. Baby steps are just one step away from sliding back into not going training at all.

But be realistic - don't tell yourself you're going to do an hour of intervals, if you know in your heart of hearts that you'll only do 3 separate sets.
If you're not doing any intervals at all, even one set on a solo ride would be an easy start and a realistic base to work from - just decide before you go what you'll do.
Don't call them intervals, if that turns you off before you start.
Power surges, sprints - find the jargon that works for you.

I heard a good tip recently for the days when you really don't feel like going out on a ride. Put your gear on anyway, before you decide. Chances are, once you're standing there in full kit, you'll go out for a spin - even just a short one.
Good luck with the training.