The easy way would be to clam up, feel bad (then worse) and self implode over this setback. So... first of all, I commend you for coming on here and talking this over instead of just crawling inside yourself. I also believe the women on this forum, which astound me on a daily basis with their compassion and caring for each other, are definitely the ones you can count on to lift your spirits at a time like this. Many have been through similarly tough situations and can be the guiding light you need. Most of all, what you are feeling is normal and totally understandable.
Certainly, one of the reasons you're feeling bad can definitely be related to not getting your energy out on the bike. Like most of us, I'm sure part of your joy of riding comes from taking a lot of the things that build up on you throughout the day and leaving it out there on the road. The endorphins (your own internal "happy drug") from the physical activity are certainly being missed, too. Also, you're probably a very independent type, like I suspect many of us on TE are, and now you're most likely having to depend on others to help with things that we all take for granted as "simple, daily" tasks.
It's hard having so many things change all at once, but try to find something to embrace during this down time. Find an alternative workout that is "friendly" to your current physical situation. What other hobbies did you give up to bike that you could pick up now in the interim? Spend more time with those people that maybe you've put on the back burner.
Yeah, this is a life altering event, but only in the short term. You are going to get better, you are going to ride once more and you are going to be happy again. So be proud of how strong you have been, how strong you are and how much stronger you will be after this. And above all... SMILE! It's hard to be down with a smile on your face. I know you have it in you. We all have it.

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And just to set the record straight on how "full of it" I really am on this subject... Ok, here it goes... 15 years ago while riding my Harley, I got blasted by an uninsured motorist (18 y.o. kid) who blew through an intersection (playing chicken with his buddies) and took me out like rag doll. I spent 2 1/2 years (yeah, YEARS! ) in casts on my left leg (knee down), lost 3" of bone that I had to grow back (still 3/4" short), 9 surgeries (including bone grafts, skin grafts, lots of hardware), 100's of stitches and staples, and untold # of xrays. I lost my job, all my savings, and yes for a while, I lost myself. For the first year and a half, they still didn't know if they were going to cut my leg off. Just couldn't get it to start to knit. I had 10 hrs. a day of shock stim for a year before we saw some progress.
For a long time, I just saw no end in site and I definitely had my melt downs. Somewhere along the line, it occured to me that I was lucky. I didn't have spinal injuries, brain damage (well, not that they've been able to prove) or a host of other things that so many others have experienced from cycle accidents.
Eventually, the last hard cast came off. It took me a year to walk semi-normally (no crutches and in a regular shoe) and do things like curl my toes and get my ankle to move. 15 years later, my foot, toes and ankle still swell like a football everyday. My friends affectionately call it the Frankenleg because it looks like they took a couple of chunks of unmatched legs and sewed them together. hehehe But, it's still there and it (mostly) works. Oh, it just loves those hills!
But... I got through stronger, happier and more determined. Before, I was a shy, introvert. Now, you can't shut me up. (I do have a way of making a long story longer, don't I? )

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The moral of the story? This isn't a contest on who has/had it worst. We all have things that make us question our resolve and push us to our limits. These are opportunities to realize how strong we truly are inside. There is good and bad in every situation. It's up to each of us to find the good and just concentrate on that. The rest will take care of itself.

All my best to you (and all of the others out there who are going through various things right now) and take care!

Cindy