Must make time to prepare and Pain is not my friend

I have found that if I don't prepare food and portion it out for the week for lunch I don't do so well. I end up having a long period of time between meals and feel sick. I am in training this week and didn't prepare my meals like I would normally. Don't get me wrong. I bring my food from home, I am just not bringing something satisfying. So then, I am hungry after a few hours and end up stretching that time out until dinner because I didn't bring a good protein snack with me. I do this it seems every other week.

Next topic. Pain. My knees, hips, back, legs. For years I have felt twinges, dull aches, sharp stabbing pains. I was always told, LOSE WEIGHT. Well I have started to do that and well, it hurts even worse. Go figure. Turns out I have arthritis in my knee and I have been advised no treadmill or walking long distances. Stationary bike or water exercises until the knee is better then try the elliptical. Not a good prognosis.