Yes, of course. I got a sunlight lamp and put it over my monitor. I actually went so far as sitting outside in the evening for an hour, every day. I also tried taking melatonin.

But the thing with insomnia is that it is self-reinforcing. You get conditioned to lying in bed awake, and that's what your brain then expects to do when you go to bed. And then you get anxious about it, which makes it worse. Once you have it, removing the original cause doesn't solve the problem.

In my defense, I worked under these conditions for five years before it became an issue.