Hi there:
I'm not big on meditation, I prefer to call it contemplation. Meditation almost always just puts one in a pleasant alpha state or to sleep. I suggest you relabel it as contemplation and gently ask whatever koan you like throughout your active day. You do something like sit down at your computer or do the dishes and ask ''who is doing this?'', ''Who decided this''... ''Do I exist'', etc. You can make whatever you want up. Remember, a good question in a spiritual sense doesn't have an answer... you don't want answers, just that constant state of questioning. When you think you are going to go stark raving mad then just relax, it means you are making progress.
Love ya, Jed.