I hear ya Johnny!   I can't stand being laid up.   I had an arthroscopy and it seemed like forever even after just a  couple of weeks of hopping around.   Even after a year or so just thinking of doing the other knee makes me depressed.   It seemes like you are never going to get better.   What helped me was not looking at the crutches, pillows, blankets and the sofa.   I kept my mind on other things like work.   I'me a stenographer and can work from home.   I have hobbies as well and tried as much as possible to research knee problems and that is how I found this site.
The more able-bodied you become,  the happier you will be and it does pass.   I don't know what kind of surgery you had but I hope you are up and walking around soon.  Know that you are not alone.

LAS

I am assuming your not working yet and your family has been very supportive.   I thinks you had better stay off the dirt bike in the future.   All kidding aside,  you have getting better to look forward to.   PT helps alot but don't do too much too soon.   It's easy to do when you're bored.   Good Luck to you and your family.    LAS

I'me really not surprised that you will be back doing the things you love to do and again it's something to look forward to.   I'me not at all surprised either that your depressed cause that's alot of surgery, alot of PT.   It took me probably 6 months to recover entirely and I thought the PT would never end.  It was a drag.   Again my surgery was not as extensive as yours and everybody recouperates differently.   It's pretty normal to feel the way you do under the circumstances and deep down you know what you have to do to get there.   I am actually very glad to hear you will return to the dirtbike and teach the 5 year old how to ride.   Let us know your progress.   LAS

I understand entirely. I'm currently 3 weeks post op on a MPFL reconstruction after a year of battling against surgery. I've been a competitive dancer for the past 9 years and this year, I didn't get to compete at all because of my knee. Now I'm sitting on the couch while all my friends go to nationals and I can't even get up and get my own supper! It's so frustrating and depressing. However, I know in a year I'll be going with them and I'll be stronger than ever which makes it all worth while!

I'm finally starting to feel like I'm getting better. Today I walked to my neighbors house about 2 blocks away, mostly on one crutch. I feel like I'm coming back from the dead.