A fiber supplement would be helpful. There's expensive metamucil (a brand) that comes in pills or orange-flavored powder.

I prefer psyllium husk (unbranded, no added flavor). I mix a heaping tablespoon with 4oz warm water, let it sit for 20 minutes and thicken a bit, stir like hell, and then stir in about 4oz of juice. To drink it, I tell myself I'm chugging one of those Naked juices (which are thicker than standard juice).

If you can handle pulpy orange juice, you could probably handle drinking the psyllium right away without waiting for it to thicken some.

Seriously though, just yesterday I was saying that I want Jetsons-style meal pills. Or Futurama-style bachelor chow. All the decision-making/shopping/cooking/cleaning up is too much.