It's good that you see that it isn't the jobs themselves. That the dissatisfaction and disengagement in your work is part of the larger picture. You've had job losses and personal losses to deal with. Motivation is hard to find when the life we worked hard to create becomes something we barely recognize. Motivation comes from within, is nudged by desires and dreams. When life falls apart, desires and dreams lose their context, their meaning. New ones will come along if you allow them in.