You selling your bike broke my heart man! You just sold a piece of you. Sure you can get it back and rebuild something new, but with your W being callous with money and you having to dig deep to keep the fam afloat is tragic. I don't have anything to add to what others have said, but you need to seriously start taking control of things that you can about your life.
I am sad because you had to sell your GAL, while she had money that she spent frivolously. Dayummm!! When I think about what piecing is, it has to include both partners working to save the M and protect the family and create a new partnership.
What just happened with you is not any of that. Sorry man, but time to take a hard line approach to gain back your sanity and b@lls.