Hey there SnowTulip
I know it can be very hard to get back on the bike after a bit of time off it

I have found watching the Tour a great motivator for me getting on the bike indoors (its winter here)

But my biggest intrinsic motivation is me "personal bests". I have courses I regularly ride, and little hills I try and conquer.
No-one else's times on these matter to me... its about seeing my improvement...

For example there is a nasty little pinch of a hill, only about 600metres long, but we estimate about 10-11% gradient.

When I first started riding (21 months ago) I had to walk part of it, then stop and rest coming up it... then it took me 6 minutes... the other day I rode up it in 4:45 minutes...

Another example is my first commute to work - 23km from my gate to outside the campus...
20 months ago it took me and hour and 10 minutes. Last month I did it in just over 45 minutes.

Thats what motivates me. I don't try and do PBs all the time, so the days I just ride at a steady pace, I know I am preparing to attempt another PB...

My greatest extrinsic motivation is my partner and my my oldest sons, who all encourage me and see every achievement I make as something as big as their achievements (they ride in the top grades locally... so are so far ahead of me in terms of ability its ridiculous). But having them believe in me, be interested when I do a PB, and want to hear the details of my race... that makes a huge difference in my wanting to get out on a bike again...

Good luck with finding your motivation, Tulip