Ab,
I think we can deprogram ourselves(consciously) only up to a point, but to go farther, and the process is very slow,,,, we need to reach the subconscious,,, which really controls us more than the conscious.
Maybe hypnotism along with some subliminal messages to the subconscious may change your paterns that lead to better time management with out the stress of watching the clock.
The subconscious is very important in get better results.
BTW I found Marijuana very helpful at times,,, I think it confuses the conscious mind,,, or at least,,, pacifies it,,enough to surprisingly let the subconscious figure things out.
When I really have something I want to learn or grasp mentally.
Many times I will read nonstop when stoned.